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., 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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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.
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., 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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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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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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Hofreiter, B., Huemer, C., Liegl, P., Schuster, R. (2007) Deriving executable BPEL from UMM Business Transactions, IEEE Computer Society, 2007 IEEE International Conference on Services Computing, .
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Hofreiter, B., Huemer, C., Liegl, P., Schuster, R. (2007) UMM Add-In: A UML Extension for UN/CEFACT's Modeling Methodology, Springer, Service-Oriented Computing - ICSOC 2007, .
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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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