author- Beck, München, (1958 -)
- AMCIS, page 443. Association for Information Systems, (2009)
- Expert Systems 27(1):17-39 (2010)
- IJSODIT 1(3):1-17 (2011)
- (2005)
- (2009)
- (2008)
- (2005)
- (2006)
- (2007)
- IMCSIT, page 19-23. (2010)
- Springer, Berlin u.a., (2006)
- HICSS, page 1-10. IEEE Computer Society, (2010)
- AINA, page 838-844. IEEE Computer Society, (2009)
- CRIWG, volume 5784 of Lecture Notes in Computer Science, page 79-93. Springer, (2009)
- SIGMAP, page 462-468. INSTICC Press, (2007)
- Problemata Frommann-Holzboog, Stuttgart-Bad Cannstadt, 2., verb. Aufl edition, (1973)
- Reihe Kohlhammer Kohlhammer, Stuttgart u.a., (1972)
- Soziologie Piper, München, (1976)
- Gesundheitsforschung Juventa-Verl., Weinheim u.a., (1997)
