Stumpe, C., Leukel, J., & Zimpel, T. (2024). Prediction of pasture yield using machine learning-based optical sensing: a systematic review. Precision Agriculture, 25(1), 430-459. https://doi.org/10.1007/s11119-023-10079-9

Leukel, J., González, J., & Riekert, M. (2023). Machine learning-based failure prediction in industrial maintenance: improving performance by sliding window selection. International Journal of Quality & Reliability Management, 40(6), 1449-1462. https://doi.org/10.1108/IJQRM-12-2021-0439 [PDF: Authors' version]

Leukel, J., Zimpel, T., & Stumpe, C. (2023). Machine learning technology for early prediction of grain yield at the field scale: A systematic review. Computers and Electronics in Agriculture, 207, 107721. https://doi.org/10.1016/j.compag.2023.107721 [PDF: Authors' version]

Leukel, J., Schehl, B., & Sugumaran, V. (2023). Digital inequality among older adults: explaining differences in the breadth of internet use. Information, Communication & Society, 26(1), 139-154. https://doi.org/10.1080/1369118X.2021.1942951 [PDF: Authors' version]

Leukel, J., Özbek, G., & Sugumaran, V. (2022). Application of logistic regression to explain internet use among older adults: a review of the empirical literature. Universal Access in the Information Society. https://doi.org/10.1007/s10209-022-00960-1

Leukel, J., & Sugumaran, V. (2022). How novice analysts understand supply chain process models: an experimental study of using diagrams and text. Journal of Enterprise Information Management, 35(3), 757-773. https://doi.org/10.1108/JEIM-11-2020-0478 [PDF: Authors' version]

Leukel, J., González, J., & Riekert, M. (2021). Adoption of machine learning technology for failure prediction in industrial maintenance: a systematic review. Journal of Manufacturing Systems, 61, 87-96. https://doi.org/10.1016/j.jmsy.2021.08.012 [PDF: Authors' version]

Schehl, B., & Leukel, J. (2020). Associations between individual factors, environmental factors, and outdoor independence in older adults. European Journal of Ageing, 17(3), 291-298. https://doi.org/10.1007/s10433-020-00553-y

Schehl, B., Leukel, J., & Sugumaran, V. (2019). Understanding differentiated internet use in older adults: a study of informational, social, and instrumental online activities. Computers in Human Behavior, 97, 222-230. https://doi.org/10.1016/j.chb.2019.03.031 [PDF: Authors' version]

Leukel, J., & Sugumaran, V. (2018). How product representation influences the understanding of supply chain process models. Enterprise Information Systems, 12(10), 1285-1307. https://doi.org/10.1080/17517575.2018.1533589 [PDF: Authors' version] [Supplement: SSRN]

Widmer, T., & Leukel, J. (2018). Electronic service matching: failure of incentive compatibility in Vickrey auctions. Operations Research Letters, 46(3), 318-323. https://doi.org/10.1016/j.orl.2018.03.004 [PDF: Authors' version]

Widmer, T., & Leukel, J. (2016). Efficiency of electronic service allocation with privately known quality. European Journal of Operational Research, 255(3), 856-868. http://doi.org/10.1016/j.ejor.2016.05.055 [PDF: Authors' version]

Scheuermann, A., & Leukel, J. (2014). Supply chain management ontology from an ontology engineering perspective. Computers in Industry, 65(6), 913-923. http://doi.org/10.1016/j.compind.2014.02.009 [PDF: Authors' version]

Scheuermann, A., & Leukel, J. (2014). Task ontology for supply chain planning – A literature review. International Journal of Computer Integrated Manufacturing, 27(8), 719-732. http://doi.org/10.1080/0951192X.2013.834472 [PDF: Authors' version]

Leukel, J., & Sugumaran, V. (2013). Formal correctness of supply chain design. Decision Support Systems, 56, 288-299. http://doi.org/10.1016/j.dss.2013.06.008 [PDF: Authors' version]

Leukel, J., & Kirn, S. (2011). A framework for studying cloud value systems. it – information technology, 53(4), 195-201. http://doi.org/10.1524/itit.2011.0643 [PDF: ResearchGate]

Leukel, J., Kirn, S., & Schlegel, T. (2011). Supply chain as a service: a cloud perspective on supply chain systems. IEEE Systems Journal, 5(1), 16-27. http://doi.org/10.1109/JSYST.2010.2100197 [PDF: Authors' version]

Leukel, J., & Sugumaran, V. (2009). Towards a semiotic metrics suite for product ontology evaluation. International Journal of Intelligent Information Technologies, 5(4), 1-15. http://doi.org/10.4018/jiit.2009080701 [PDF: Authors' version]

Hepp, M., Leukel, J., & Schmitz, V. (2007). A quantitative analysis of product categorization standards: content, coverage, and maintenance of eCl@ss, UNSPSC, eOTD, and the RosettaNet Technical Dictionary. Knowledge and Information Systems, 13(1), 77-114. http://doi.org/10.1007/s10115-006-0054-2

Leukel, J., & Maniatopoulos, G. (2005). A comparative analysis of product classification in public vs. private e-procurement. The Electronic Journal of e-Government, 3(4), 201-212.

Schmitz, V. & Leukel, J. (2005). Findings and recommendations from a pan-european research project: comparative analysis of e-catalog standards. International Journal of IT Standards and Standardization Research, 3(2), 51-65. http://doi.org/10.4018/jitsr.2005070105

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Leukel, J., Schehl, B., & Sugumaran, V. (2020). To do or not to do: how socio-demographic characteristics of older adults are associated with online activities. In Q. Gao & J. Zhou (Eds.), Proceedings of the 6th International Conference on Human Aspects of IT for the Aged Population (ITAP 2020) (pp. 255-268). LNCS 12209. Springer. https://doi.org/10.1007/978-3-030-50232-4_18

Leukel, J., & Hubl, M. (2018). The role of application domain knowledge in understanding supply chain process models. In Proceedings of the 39th International Conference on Information Systems (ICIS 2018). San Francisco, CA, USA. [PDF: AIS eLibrary, ResearchGate] [Supplement: SSRN]

Klein, A., Riekert, M., Kirilov, L., & Leukel, J. (2018). Increasing the explanatory power of investor sentiment analysis for commodities in online media. In W. Abramowicz, & A. Paschke (Eds.), Proceedings of the 21st International Conference on Business Information Systems (BIS 2018) (pp. 321-332). LNBIP 320. Springer. http://doi.org/10.1007/978-3-319-93931-5_23

Leukel, J., Schehl, B., Wallrafen, S., & Hubl, M. (2017). Impact of IT use by older adults on their outdoor activities. In Proceedings of the 38th International Conference on Information Systems (ICIS 2017). Seoul, Korea. [PDF: AIS eLibrary, ResearchGate]

Leukel, J., Sugumaran, V., & Hubl, M. (2016). The role of application domain knowledge in using OWL DL diagrams: a study of inference and problem-solving tasks. In Proceedings of the 37th International Conference on Information Systems (ICIS 2016). Dublin, Ireland. [PDF: AIS eLibrary, ResearchGate] [Supplement: SSRN]

Karaenke, P., Leukel, J., & Sugumaran, V. (2016). Using domain ontology for service replacement tasks: an empirical evaluation. In Proceedings of the 37th International Conference on Information Systems (ICIS 2016). Dublin, Ireland. [PDF: AIS eLibrary, ResearchGate] [Supplement: SSRN]

Riekert, M., Leukel, J., & Klein, A. (2016). Online media sentiment: understanding machine learning-based classifiers. In Proceedings of the 24th European Conference on Information Systems (ECIS 2016). Istanbul, Turkey. [PDF: AIS eLibrary, ResearchGate]

Leukel, J., Mueller, M., & Sugumaran, V. (2014). The state of design science research within the BISE community: an empirical investigation. In Proceedings of the 35th International Conference on Information Systems (ICIS 2014). Auckland, New Zealand. [PDF: AIS eLibrary, ResearchGate] [Appendix: SSRN]

Karaenke, P., Leukel, J., & Sugumaran, V. (2013). Ontology-based QoS aggregation for composite web services. In Proceedings of the 11th International Conference on Wirtschaftsinformatik (WI 2013) (pp. 1343-1357). Leipzig, Germany. [PDF: AIS eLibrary]

Vaupel, S., & Leukel, J. (2013). Modellgestützte Analyse und Optimierung der Energieeffizienz betrieblicher Informations- und Kommunikationstechnik. In Proceedings of the 11th International Conference on Wirtschaftsinformatik (WI 2013) (pp. 1131-1145). Leipzig, Germany. [PDF: AIS eLibrary]

Leukel, J., Schuele, M., Scheuermann, A., Ressel, D., & Kessler, W. (2011). Cooperative semantic document management. In W. Abramowicz (Ed.), Proceedings of the 14th International Conference on Business Information Systems (BIS 2011) (pp. 254-265). LNBIP 87. Springer. http://doi.org/10.1007/978-3-642-21863-7_22

Leukel, J., Karaenke, P., Jacob, A., Kirn, S., & Klein, A. (2011). Individualization of goods and services – Towards a logistics knowledge infrastructure for agile supply chains. In Proceedings of the 2011 AAAI Spring Symposium on AI for Business Agility (pp. 36-49). Stanford, CA, USA.

Leukel, J., & Kirn, S. (2011). A service-oriented approach to freight routing in intermodal transport systems. In Proceedings of the 10th International Conference on Wirtschaftsinformatik (WI 2011) (pp. 292-301). Zurich, Switzerland. [PDF: AIS eLibrary]

Karaenke, P., & Leukel, J. (2010). Towards ontology-based QoS aggregation for composite web services. In K.-P. Fähnrich, & B. Franczyk (Eds.), Proceedings INFORMATIK 2010 (pp. 120-125). LNI P-175. GI. [PDF: ELibM]

Mujaj, Y., Leukel, J., & Kirn, S. (2008). Reverse pricing in supply chains: an assessment of sourcing strategies. In Proceedings of the 10th IEEE International Conference on E-Commerce Technology (CEC 2008) (pp. 68-75). Washington, D.C., USA. http://doi.org/10.1109/CECandEEE.2008.127

Leukel, J., & Kirn, S. (2008). A supply chain management approach to logistics ontologies in information systems. In W. Abramowicz, & D. Fensel (Eds.), Proceedings of the 11th International Conference on Business Information Systems (BIS 2008) (pp. 95-105). LNBIP 7. Springer. http://doi.org/10.1007/978-3-540-79396-0_9

Weiß, D., Leukel, J., & Kirn, S. (2008). Concepts for modeling hybrid products in the construction industry. In W. Abramowicz, & D. Fensel (Eds.), Proceedings of the 11th International Conference on Business Information Systems (BIS 2008) (pp. 154-164). LNBIP 7. Springer. http://doi.org/10.1007/978-3-540-79396-0_14

Weiß, D., Leukel, J., & Kirn, S. (2008). A method for aligning business process modeling and software requirements engineering. In Proceedings of the PRIMIUM Subconference at the Multikonferenz Wirtschaftsinformatik (MKWI 2008). CEUR Workshop Proceedings 328.

Leukel, J., & Sugumaran, V. (2007). Evaluating product ontologies in e-commerce: a semiotic approach. In Proceedings of the 6th Workshop on e-Business (pp. 240-249). Montreal, Canada.

Kaack, J., Leukel, J., & Kirn, S. (2007). Representing mechatronic products in interorganizational information systems. In L. D. Xu, A. Min Tjoa, & S. S. Chaudry (Eds.), Proceedings of the IFIP TC8 WG8.9 International Conference on Research and Practical Issues of Enterprise Information Systems (CONFENIS 2007) (pp. 949-949). IFIP AICT 255. Springer. http://doi.org/10.1007/978-0-387-76312-5_18

Schmitz, V., Leukel, J., & Hepp, M. (2007). A modeling approach for e-business standards based on XML schema annotations. In Proceedings of the IADIS International Conference WWW / Internet 2007 (pp. 101-108). Vila Real, Portugal.

Mujaj, Y., & Leukel, J. (2007). An agent-based reverse pricing model for reducing bullwhip effect in supply chains. In Proceedings of the 13th Americas Conference on Information Systems (AMCIS 2007). Keystone, CO, USA. [PDF: AIS eLibrary]

Mujaj, Y., Leukel, J., & Kirn, S. (2007). A reverse pricing model for multi-tier supply chains. In Proceedings of the 9th IEEE International Conference on E-Commerce Technology (CEC 2007) (pp. 331-338). Tokyo, Japan. https://doi.org/10.1109/CEC-EEE.2007.14

Leukel, J., Hepp, M., Schmitz, V., & Tribowski, C. (2006). Ontologizing B2B message specifications: experiences from adopting the PLIB ontology for commercial product data. In Proceedings of the IEEE International Conference on e-Business Engineering (ICEBE 2006) (pp. 146-153). Shanghai, China. https://doi.org/10.1109/ICEBE.2006.76

Leukel, J., Schmitz, V., & Hepp, M. (2006). A critical assessment of ISO 13584 adoption by B2B data exchange specifications. In Proceedings of the 13th ISPE International Conference on Concurrent Engineering (pp. 362-370). FAIA 143. IOS Press.

Leukel, J. (2006). Maintaining property libraries in product classification schemes. In Proceedings of the 8th International Conference on Enterprise Information Systems (ICEIS 2006). Paphos, Cyprus.

Hepp, M., Leukel, J., & Schmitz, V. (2005). A quantitative analysis of eCl@ss, UNSPSC, eOTD, and RNTD: content, coverage, and maintenance. In Proceedings of the IEEE International Conference on e-Business Engineering (ICEBE 2005) (pp. 572-581). Beijing, China. https://doi.org/10.1109/ICEBE.2005.15

Schmitz, V., Leukel, J., & Hepp, M. (2005). Integrierte Dokumentation und Spezifikation von E-Business-Standards mit XML Schema-Annotationen. In Proceedings of the Berliner XML Tage 2005 (pp. 179-190). Berlin, Germany.

Leukel, J., & Maniatopoulos, G. (2005). Product classification and description in public e-procurement: Are there lessons to be learned from private e-procurement? In Proceedings of the 5th European Conference on e-Government (ECEG 2005) (pp. 247-256). Antwerp, Belgium.

Hepp, M., Leukel, J., & Schmitz, V. (2005). Content metrics for products and services categorization standards. In Proceedings of the 2005 IEEE International Conference on e-Technology, e-Commerce and e-Service (EEE-05) (pp. 740-745). Hong Kong, China. https://doi.org/10.1109/EEE.2005.54

Schmitz, V., Leukel, J., & Dorloff, F.-D. (2005). Do e-catalog standards support advanced processes in B2B e-commerce? Findings from the CEN/ISSS Workshop eCAT. In Proceedings of the 38th Hawaii International Conference on System Sciences (HICSS-38). Waikoloa, HI, USA. https://doi.org/10.1109/HICSS.2005.209

Leukel, J. (2004). Standardization of product ontologies in B2B relationships – On the role of ISO 13584. In Proceedings of the 10th Americas Conference on Information Systems (AMCIS 2004) (pp. 4084-4091). New York, NY, USA. [PDF: AIS eLibrary]

Leukel, J. (2004). Automating product classification: the impact of standardization. In Proceedings of the IADIS International Conference e-Society 2004 (pp. 147-154). Avila, Spain.

Leukel, J., Schmitz, V., & Dorloff, F.-D. (2003). B2B e-procurement beyond MRO? In Proceedings of the 6th International Conference on Electronic Commerce Research (ICECR-6) (pp. 493-500). Dallas, TX, USA.

Schmitz, V., & Leukel, J. (2003). CEN/ISSS Workshop eCAT – A step towards multilingual electronic product catalogues. In Proceedings of the 10th ISPE International Conference on Concurrent Engineering (pp. 321-327). Madeira, Portugal.

Schmitz, V., Leukel, J., & Dorloff, F.-D. (2003). Does B2B data exchange tap the full potential of XML schema languages? In Proceedings of the 16th Bled Electronic Commerce Conference (pp. 172-182). Bled, Slovenia. [PDF: AIS eLibrary]

Schmitz, V., Leukel, J., & Dorloff, F.-D. (2003). XML data modeling concepts in B2B catalog standards. In Proceedings of the IADIS International Conference e-Society 2003 (pp. 227-234). Lisboa, Portugal.

Leukel, J., Schmitz, V., & Dorloff, F.-D. (2002). Exchange of catalog data in B2B relationships – Analysis and improvement. In Proceedings of the IADIS International Conference WWW/Internet 2002 (pp. 403-410). Lisboa, Portugal.

Leukel, J., Schmitz, V., & Dorloff, F.-D. (2002). Coordination and exchange of XML catalog data in B2B. In Proceedings of the 5th International Conference on Electronic Commerce Research (ICECR-5). Montreal, Canada.

Leukel, J., Schmitz, V., & Dorloff, F.-D. (2002). Referenzmodell für den Austausch von Produktklassifikationssystemen im E-Business. In P. Loos, & N. Gronau (Eds.) E-Business – Integration industrieller ERP-Architekturen. Multikonferenz Wirtschaftsinformatik 2002 (pp. 85-97). Cuvillier.

Leukel, J., Schmitz, V., & Dorloff, F.-D. (2002). A modeling approach for product classification systems. In Proceedings of the 13th International Workshop on Database and Expert Systems Applications (DEXA 2002) (pp. 868-874). Aix-en-Provence, France. https://doi.org/10.1109/DEXA.2002.1046005

Leukel, J., Schmitz, V., & Dorloff, F.-D. (2002). Modeling and exchange of product classification systems using XML. In Proceedings of the 4th IEEE International Workshop on Advanced Issues of E-Commerce and Web-based Information Systems (WECWIS 2002) (pp. 242-244). Newport Beach, CA, USA. https://doi.org/10.1109/WECWIS.2002.1021265

Kelkar, O., Leukel, J., & Schmitz, V. (2002). Price modeling in standards for electronic product catalogs based on XML. In Proceedings of the 11th International World Wide Web Conference (WWW2002) (pp. 366-375). Honolulu, HI, USA. https://doi.org/10.1145/511446.511494

Kelkar, O., Leukel, J., & Schmitz, V. (2002). Towards extended price models in XML standards for electronic product catalogs. In Proceedings of the 4th International Conference on Enterprise Information Systems (ICEIS 2002) (pp. 937-945). Ciudad Real, Spain.

Leukel, J., & Schmitz, V. (2002). Modellierung von Preisinformationen in elektronischen Produktkatalogen. In M. Glinz, & G. Müller-Luschnat (Eds.), Modellierung 2002 (pp. 171-181). LNI P-12. GI.

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Zimpel, T., Perdana-Decker, S., Leukel, J., Scheurer, L., Dickhoefer, U., & Werner, J. (2023). P42 Estimating pasture yield using machine learning and weather data: effect of small and large prediction horizons. animal – science proceedings, 14(4), 628-629. https://doi.org/10.1016/j.anscip.2023.04.137

Leukel, J., & Scheuermann, A. (2014). Cloud Logistics ist mehr als Logistiksoftware aus der Cloud. Wirtschaftsinformatik & Management, 6(1), 38-45. https://doi.org/10.1365/s35764-014-0383-y

Leukel, J., & Kirn, S. (2008). Aufwandsschätzung für die Nutzung von Produktklassifikationen. Industrie Management – Zeitschrift für industrielle Geschäftsprozesse, 25(3), 57-60.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2004). Konverter für XML-basierte Geschäftsdokumente. WISU – Das Wirtschaftsstudium, 33(3), 341-348.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2004). Datentransformation bei XML-basierten Geschäftsdokumenten. WISU – Das Wirtschaftsstudium, 33(1), 87-94.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2002). Produktmodelle in elektronischen Katalogen. WISU – Das Wirtschaftsstudium, 31(12), 1557-1563.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2002). Betriebliches Katalogdaten-Management. WISU – Das Wirtschaftsstudium, 31(3), 369-377.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2001). Standards für den Austausch elektronischer Produktkataloge. WISU – Das Wirtschaftsstudium, 30(11), 1528-1536.

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Leukel, J., & Wallrafen, S. (2021). Situation älterer Menschen in Deutschland. In M. Kösebay, S. Kirn, S. Wallrafen, J. Leukel, F. & Gierl (Eds.), Stadt der Zukunft. Smartes Stadtmobiliar für mehr Teilhabe im Alter (pp. 77-83). medhochzwei.

Leukel, J., Schehl, B., & Wallrafen, S. (2021). Bürgerbefragung 65+ in Mönchengladbach. In M. Kösebay, S. Kirn, S. Wallrafen, J. Leukel, F. & Gierl (Eds.), Stadt der Zukunft. Smartes Stadtmobiliar für mehr Teilhabe im Alter (pp. 104-118). medhochzwei.

Leukel, J., Fernandes, J., Heidebrecht, A., & Schillings, S. (2012). Agency theory in e-healthcare and telemedicine: a literature study. In N. Wickramasinghe, R. K. Bali, S. Kirn, & R. Suomi (Eds.), Critical issues for the development of sustainable e-health solutions (pp. 313-330). Springer. http://doi.org/10.1007/978-1-4614-1536-7_20

Leukel, J., & Kirn, S. (2011). Toward semantics-based service composition in transport logistics. In V. Sugumaran, &. J. A. Gulla (Eds.), Applied semantic technologies: using semantics in intelligent information processing (pp. 379-394). Auerbach.

Leukel, J., & Sugumaran, V. (2011). Semiotic evaluation of product ontologies. In V. Sugumaran (Ed.), Intelligent, adaptive and reasoning technologies (pp. 64-79). IGI Global. http://doi.org/10.4018/978-1-60960-595-7.ch004

Leukel, J., & Sugumaran, V. (2010). Towards a semiotic metrics suite for product ontology evaluation. In B. Nag (Ed.), Intelligent systems in operations: methods, models and applications in the supply chain (pp. 309-323). IGI Global. http://doi.org/10.4018/978-1-61520-605-6.ch016

Leukel, J., & Kirn, S. (2008). Semantic modeling of logistics services. In S. Kirn (Ed.), Individualization Engineering (pp. 63-78). Cuvillier.

Weiß, D., Leukel, J., & Kirn, S. (2008). Hybride Produktdatenmodelle. In S. Kirn (Ed.), Individualization Engineering (pp. 79-89). Cuvillier.

Kirn, S., Anhalt, C., Bieser, T., Jacob, A., Klein, A., & Leukel, J. (2008). Individualisierung von Sachgütern und Dienstleistungen durch Adaptivität von Wertschöpfungssystemen in Raum, Zeit und Ökonomie. In S. Kirn (Ed.), Individualization Engineering (pp. 3-60). Cuvillier.

Leukel, J. (2008). Controlling property growth in product classification schemes: a data management approach. In Y. Manolopoulos, J. Filipe, P. Constantopoulos, & J. Cordeiro (Eds.), ICEIS 2006 Revised Selected Papers (pp. 363-374). LNBIP 3. Springer. http://doi.org/10.1007/978-3-540-77581-2_25

Kaack, J., Leukel, J., & Kirn, S. (2007). Lebenszyklusmanagement für mechatronische Produkte in der Automotive Supply Chain. In W. Dangelmaier, M. Aufenanger, & B. Klöpper (Eds.), Kundenindividuelle Produktion und lieferzeitoptimierte Unternehmensnetze, 9. Paderborner Frühjahrstagung. Fraunhofer-ALB.

Schmitz, V., Leukel, J., & Kelkar, O. (2004). XML-based data exchange of product model data in e-procurement and e-sales: the case of BMEcat 2.0. In Proceedings of the International Conference on Economic, Technical and Organisational Aspects of Product Configuration Systems (PETO 2004) (pp. 97-107). Copenhagen, Denmark.

Beul, M., Bittscheidt, C., Leukel, J., & Spies, T. (2003). Behandlung von Informationsdefiziten und -verlusten bei der Transformation von XML-Geschäftsdaten. In W. Dangelmaier, T. Gajewski, & C. Kösters (Eds.), Innovationen im E-Business, 5. Paderborner Frühjahrstagung (pp. 159-168). Fraunhofer-ALB.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2003). Handelbarkeit von Dienstleistungen auf elektronischen Märkten. In W. Dangelmaier, T. Gajewski, & C. Kösters (Eds.), Innovationen im E-Business, 5. Paderborner Frühjahrstagung (pp. 429-437). Fraunhofer-ALB.

Kelkar, O., Leukel, J., & Schmitz, V. (2003). Towards extended price models in XML standards for electronic product catalogs. In M. Piattini, J. Filipe, &. J. Braz (Eds.), Enterprise information systems IV (pp. 251-259). Kluwer Academic.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (2002). Konfigurierbare Produkte in XML-Katalogstandards. In W. Dangelmaier, A. Emmrich, & D. Kaschula (Eds.), Modelle im E-Business, 4. Paderborner Frühjahrstagung (pp. 699-712). Fraunhofer-ALB.

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Leukel, J. (2004). Katalogdatenmanagement im B2B E-Commerce. Josef Eul.

Kösebay, M., Kirn, S., Wallrafen, S., Leukel, J., & Gierl, F. (Eds.) (2021). Stadt der Zukunft – Smartes Stadtmobiliar für mehr Teilhabe im Alter. medhochzwei.

Dorloff, F.-D., Leukel, J., & Schmitz, V. (Eds.). (2004). E-Business – Standardisierung und Integration. Tagungsband zur Multikonferenz Wirtschaftsinformatik 2004. Cuvillier.