Online Service Delivery Models – An International Comparison in the Public Sector, Kohlborn, T., Weiss S., Poeppelbuss J., Korthaus A., and Fielt E. , 21st Australian Conference on Information Systems, Brisbane, (2010)

Service Analysis - A Critical Assessment of The State of the Art, Kohlborn, T., Korthaus A., Chai T., and Rosemann M. , 17th European Conference on Information Systems, Verona, Italy, (2009)