1. Kestler, H.A., Sablatnög, S., Simon, S., Enderle, S., Baune, A., Kraetschmar, G.K., Schwenker, F., Palm, G.: Concurrent Object Identification and Localization for a Mobile Robot. Number 4 in Künstliche Intelligenz, Springer Verlag (2000) 23–29
2. Simon, S., Kestler, H., Baune, A., Schwenker, F., Palm, G.: Object classification with simple visual attention and a hierarchical neural network for subsymbolic-symbolic coupling. In: Proceedings of the 1999 IEEE International Symposium on Computational Intelligence in Robotics and Automation. (1999) 244–249
3. Roth, M., Freeman, W.: Orientation histograms for hand gesture recognition. Technical Report 94-03, Mitsubishi Electric Research Laboratories, Cambridge Research Center (1995)
4. Mel, B.: Seemore: Combining colour, shape, and texture histogramming in a neurally-inspired approach to visual object recognition. Neural Computation 9 (1997) 777–804
5. Kohonen, T.: Self Organizing Maps. Springer-Verlag (1995)