Publications
Zapletal, M., Schuster, R., Liegl, P., Huemer, C. (2015) The UN/CEFACT Modeling Methodology UMM 2.0: Choreographing Business Document Exchanges, Springer, Handbook on Business Process Management 1, 2nd Edition, 
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Huemer, C., Zapletal, M., Liegl, P. (2014) Crossing the Boundaries: e-Invoicing/e-Procurement as Native ERP Features, ERP Future 2013 Conference, Novel Methods and Technologies for Enterprise Information Systems, .
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Huemer, C., Liegl, P., Zapletal, M. (2013) Eine Plattform für den elektronischen Austausch von Geschäftsdokumenten, Linde Verlag, Handbuch E-Rechnung und E-Procurement.
Huemer, C., Kappel, G., Liegl, P., Schuster, R. (2012) ERPEL: Enabling Seamless Ad-hoc Cross Enterprise Collaborations, Proceedings of the Annual SRII Global Conference 2012.
Liegl, P., Huemer, C., Pichler, C. (2011) Registry support for core component-based business document models, Service Oriented Computing and Applications, 5-3.
Grün, C., Huemer, C., Liegl, P., Mayrhofer, D. (2011) eBusiness, Springer, Handbook of Semantic Web Technologies.
Liegl, P. (2010) Business Documents for Inter-Organizational Business Processes, , Ph.D. thesis at Institute of Software Technology and Interactive Systems, .
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Liegl, P., Huemer, C., Pichler, C. (2010) A bottom-up approach to build XML business document standards, IEEE, Proceedings of the 7th IEEE International Conference on e-Business Engineering, .
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Zapletal, M., Schuster, R., Liegl, P., Huemer, C. (2010) Modelling Interorganizational Business Processes, Springer, Handbook on Business Process Management 1.
Liegl, P., Zapletal, M., Pichler, C., Strommer, M. (2010) State-of-the-art in business document standards, Proceedings of the 8th IEEE International Conference on Industrial Informatics, .
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Pichler, C., Strommer, M., Liegl, P. (2010) On Mapping Business Document Models to Core Components, IEEE Computer Society, Proceedings of the 43th Hawaii International Conference on System Sciences, .
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Strommer, M., Pichler, C., Liegl, P. (2010) A Document Management Framework based on Core Components, 12th IEEE Conference on Commerce and Enterprise Computing, Proceedings of the 12th IEEE Conference on Commerce and Enterprise Computing, .
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Huemer, C., Liegl, P., Pichler, C. (2009) A registry model for UN/CEFACT's Core Components, IEEE Computer Society, Proceedings of the IEEE International Conference on Service-Oriented Computing and Applications, .
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Huemer, C., Liegl, P., Schuster, R., Zapletal, M. (2009) B2B Services: Worksheet-Driven Development of Modeling Artifacts and Code, Computer Journal, 52-8.
Zapletal, M., van der Aalst, W., Russell, N., Liegl, P. (2009) Pattern-based Analysis of Windows Workflow, Technische Universiteit Eindhoven Computer Science Report, 09/07-09/07, .
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Huemer, C., Liegl, P., Schuster, R., Zapletal, M. (2009) Service-Oriented Enterprise Modeling and Analysis, Auerbach Publications, Handbook of Enterprise Integration.
Liegl, P., Huemer, C., Zapletal, M. (2009) Towards a global business document reference ontology, IEEE Computer Society, Proccedings of the Third IEEE International Conference on Semantic Computing, .
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Eis, C., Huemer, C., Liegl, P., Pichler, C. (2009) A Framework for Managing the Complexity of Business Document Integration, IIMC International Information Management Corporation, Proceedings of the eChallenges 2009 Conference and Exhibition, .
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Liegl, P., Schuster, R., Zapletal, M., Huemer, C. (2009) [vem:xi:] - A methodology for process based requirements engineering, IEEE Computer Society, Proceedings of the 17th IEEE Requirements Engineering Conference, .
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Eis, C., Liegl, P., Pichler, C., Strommer, M. (2009) An Evaluation of Mapping Strategies for Core Components, IEEE, Proceedings of the the 5th World Congress on Services, .
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Zapletal, M., van der Aalst, W., Russell, N., Liegl, P. (2009) An Analysis of Windows Workflow's Control-Flow Expressiveness, IEEE Computer Society, Proceedings of the 7th IEEE European Conference on Web Services, .
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Huemer, C., Liegl, P., Schuster, R., Werthner, H. (2008) Inter-organizational Systems: From Business Values over Business Processes to Deployment, IEEE, Proceedings of the 2nd International IEEE Conference on Digital Ecosystems and Technologies (DEST2008), .
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Huemer, C., Liegl, P., Schuster, R., Zapletal, M. (2008) A 3-level e-Business Registry Meta Model, IEEE Computer Society, Proceedings of the 2008 IEEE International Conference on Services Computing (SCC 2008), .
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Zapletal, M., Liegl, P., Schuster, R. (2008) UN/CEFACT's Modeling Methodology (UMM) 1.0 - A Guide to UMM and the UMM Add-In, VDM - Verlag Dr. Müller, Saarbrücken.
Huemer, C., Liegl, P., Motal, T., Schuster, R. (2008) The Development Process of the UN/CEFACT Modeling Methodology, ACM, Proceedings of the Tenth International Conference on Electronic Commerce, .
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Liegl, P., Motal, T., Schuster, R. (2008) An Add-In for UN/CEFACT´s Modeling Methodology 2.0, Tenth International Conference on Electronic Commerce (ICEC08), Innsbruck, .
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Hofreiter, B., Huemer, C., Liegl, P., Mosser, R. (2007) Modeling e-Government processes with UMM, Informatica - An International Journal of Computing and Informatics, Ljubljana-ISSN: 1854-3871, .
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Huemer, C., Liegl, P., Schuster, R., Zapletal, M. (2007) Modeling Business Entity State Centric Choreographies, IEEE Computer Society, Proceedings of the 9th IEEE International Conference on E-Commerce Technology (CEC 2007) / 4th IEEE International Conference on Enterprise Computing, E-Commerce and E-Services (EEE 2007), .
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Huemer, C., Liegl, P., Schuster, R., Zapletal, M. (2007) Worksheet-Driven UMM Modeling of B2B Services, IEEE Computer Society, e-Business Engineering, 2007. ICEBE 2007. IEEE International Conference on, .
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Liegl, P., Mosser, R., Schuster, R., Zapletal, M. (2007) Modeling e-Government processes with UMM, Proceedings of the VIP Symposia on Internet related research - VIPSI, .
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