- submitted to COOP’10 – 9th International Conference on the Design of Cooperative Systems., (2010)
- Proceedings HCI International 2005, Mahwah,NJ, Lawrence Erlbaum Associates, (2005)Online-Proceedings .
- Datenschutz Nachrichten (2008)
- Vernetzte und komplexe Informatik-Systeme - GI - 18.Jahrestagung, Hamburg, 17.-19. Oktober, page S. 521-532.. Berlin, Springer Verlag, (1988)
- Multikonferenz Wirtschaftsinformatik, MKWI 2008, München, 26.2.2008 - 28.2.2008, page 1577-1588. Berlin, GITO-Verlag, (2008)
- Designing Digital Environments — Bringing in More Voices, Proceedings of the Participatory Design Conference 2000, CPSR, Palo Alto., page 106 - 115. Palo Alto, CPSR, (2000)
- International Journal of Computer Supported Collaborative Learning 3(3):273-299 (2008)
- Cooperative Systems Design: Scenario-Based Design of Collaborative Systems, page 163-178. Amsterdam, IOS Press, (2004)
- From CSCW to Web 2.0, Berlin, Springer, (2010)
- Innovations for Requirement Analysis. From Stakeholders' Needs to Formal Designs, page 62--84. Berlin, Heidelberg, Springer-Verlag, (2008)
- Journal Arbeit (Sommer 2009)
- Technologie - Innovation - Dienstleistung. Tagungsband 7. Dienstleistungstagung des BMBF, Berlin, BMBF, (2008)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, Wiesbaden, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)
- Implementing International Services. A tailorable method for market assessment, modularization and process transfer, Gabler, (2010)


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