- Geographische Rundschau 63(12):60-65 (2011)mit Lit.-Hinweisen .
- Georg Westermann Verlag GmbH, Braunschweig, (1994)
- FTCS, page 296-301. IEEE Computer Society, (1998)
- IEEE Transactions on Communications 51(7):1061-1063 (2003)
- ECIS, page 1622-1633. (2005)
- J. Informetrics 6(1):11-18 (2012)
- Scientometrics 89(3):835-843 (2011)
- IEEE Transactions on Information Theory 49(12):3271-3282 (2003)
- IEEE Transactions on Information Theory 36(3):696-705 (1990)
- IEEE Transactions on Information Theory 47(6):2607-2608 (2001)
- (2005)
- Fink, München, (2007)
- Fundam. Inform. (2005)
- Fundam. Inform. (2004)
- Fundam. Inform. 31(3/4):237-252 (1997)
- Fundam. Inform. 47(3-4):201-215 (2001)
- Fundam. Inform. 51(3):251-270 (2002)
- Fundam. Inform. 75(1-4):281-294 (2007)
- AI Commun. 9(3):138-146 (1996)
- Theor. Comput. Sci. (1985)


author