R. Franke, F. Casella, M. Sielemann, K. Prölß, M. Otter, and M. Wetter. Proceedings of the 7th International Modelica Conference, volume 43 of Linköping Electronic Conference Proceedings, page 122--131. Linköping, Linköping University Electronic Press, Linköpings universitet, (2009)
R. Sałustowicz, M. Wiering, and J. Schmidhuber. Progress in Connectionist-based Information Systems:
Proceedings of the Fourth International Conference on
Neural Information Processing ICONIP'97, 1, page 502--505. Springer-Verlag, (1997)