The 2nd International Paderborn Computer-Chess Championship. - Ulf Lorenz; Valentin Rottmann (J. Int. Comput. Games Assoc., 1992)

Report on the 4th International Paderborn Computer-Chess Championship. - Ulf Lorenz; Valentin Rottmann (J. Int. Comput. Games Assoc., 1994)

Controlled Conspiracy-Number Search. - Ulf Lorenz; Valentin Rottmann; Rainer Feldmann; Peter Mysliwietz (J. Int. Comput. Games Assoc., 1995)

A Simple Distributed Scheduling Policy for Parallel Interactive Continuous Media Servers. - Valentin Rottmann; Petra Berenbrink; Reinhard Lüling (Parallel Comput., 1997)