Evaluating E-Government. - Christian Seel; Oliver Thomas 001; Bettina Kaffai; Thomas Matheis (I3E, 2005)

Modelling of Cross-Organizational Business Processes. - Jörg Ziemann; Thomas Matheis; Jörn Freiheit (EMISA, 2007)

Towards Tool Support for Integrated Modeling of Private and Public Business Processes. - Jörg Ziemann; Dirk Werth; Thomas Matheis; Timo Kahl (WETICE, 2007)

Kollaboratives Data Warehousing - Konzeption und prototypische Realisierung flexibler Schema- und Datenintegration. - Thomas Matheis; Dirk Werth; Peter Loos (Wirtschaftsinformatik (1), 2007)

Cross-organizational processes in Public Administrations: Conceptual modeling and implementation with Web Service Protocols. - Jörg Ziemann; Timo Kahl; Thomas Matheis (Wirtschaftsinformatik (1), 2007)

Modelling of Cross-Organizational Business Processes - Current Methods and Standards. - Jörg Ziemann; Thomas Matheis; Jörn Freiheit (Enterp. Model. Inf. Syst. Archit. Int. J. Concept. Model., 2007)

Evaluating eGovernment in the Large - A Requirements Oriented Approach. - Thomas Matheis; Jörg Ziemann; Daniel M. Schmidt; Maria Wimmer 001; Peter Loos (AMCIS, 2008)

Monitoring Cross-Organizational Business Processes. - Thomas Matheis; Peter Loos (CSREA EEE, 2008)

Conceiving Interoperability between Public Authorities - A Methodical Framework. - Jörg Ziemann; Thomas Matheis; Dirk Werth (HICSS, 2008)

Gathering requirements for eGovernment in the large - Conceptual framework and exemplary application. - Thomas Matheis; Jörg Ziemann; Daniel M. Schmidt; Maria Wimmer 001; Peter Loos (Multikonferenz Wirtschaftsinformatik, 2008)

Requirements Based Evaluation of eGovernment in the Large. - Thomas Matheis; Jörg Ziemann; Peter Loos; Daniel M. Schmidt; Maria Wimmer 001 (Int. J. Electron. Gov. Res., 2009)