XOR and backpropagation learning: in and out of the chaos? - Koen Bertels; Luc Neuberg; Stamatis Vassiliadis; D. G. Pechanek (ESANN, 1995)

Chaos and Neural Network Learning. Some Observations. - Koen Bertels; Luc Neuberg; Stamatis Vassiliadis; D. G. Pechanek (Neural Process. Lett., 1998)

Qualitative company performance evaluation: Linear discriminant analysis and neural network models. - Koen Bertels; J. M. Jacques; Luc Neuberg; L. Gatot (Eur. J. Oper. Res., 1999)

A look inside the learning process of neural networks. - Koen Bertels; Luc Neuberg; Stamatis Vassiliadis; Gerald G. Pechanek (Complex., 2000)

On Chaos and Neural Networks: The Backpropagation Paradigm. - Koen Bertels; Luc Neuberg; Stamatis Vassiliadis; D. G. Pechanek (Artif. Intell. Rev., 2001)

Heterogeneous trading agents. - Luc Neuberg; Koen Bertels (Complex., 2003)