A new method for the analysis of neural reference model control. - Michael Wigbers; Martin A. Riedmiller (ICNN, 1997)

Bayesian learning for sales rate prediction for thousands of retailers. - Thomas Ragg; Wolfram Menzel; Walter Baum; Michael Wigbers (Neurocomputing, 2002)

The Smaller the Better: Comparison of Two Approaches for Sales Rate Prediction. - Martin Lauer; Martin A. Riedmiller; Thomas Ragg; Walter Baum; Michael Wigbers (IDA, 2003)