1. Ågerfalk PJ (2003) Information Systems Actability: Understanding Information Technology as a Tool for Business Action and Communication. Department of Computer and Information Science Linköping University Sweden
2. Chidambaram L (2001) The Editor’s Column. E-Service Journal, vol 1, no 1
3. Dahlbom B (2002) From Systems to Services. www.viktoria.se/~dahlboml
4. Edvardsson B, Gustafsson A, Johnson MD, Sandén B (2000) New Service Development and Innovation in the New Economy. Studentlitteratur Lund Sweden.
5. Grönroos C (1998) Service Marketing Theory — Back to Basics. Swedish School of Economics and Business Administration Helsingfors Finland