Gehlen, Stefan and Tolle, Henning and Kreuzig, J. and Friedl, P. (1992):
Integration of Expert Systems and Neural Networks for the Control of Fermentation Processes.
Keystone, Col., USA, IFAC Symposium on Modeling and Control of Biotechnical Processes, [Conference or Workshop Item]

Gehlen, Stefan and Kreuzig, J. (1991):
Learning by Interpolating Memories for Modelling of Fermentation Processes.
Toulouse, France, IFAC Symposium on Advanced Control of Chemical Processes, [Conference or Workshop Item]