1. ISO/IEC. Information technology - Multimedia content description interface - Part 3: Visual (2002) 15938-3:2002(E)
2. Springer Series in Information Sciences;T. Kohonen,2001
3. Koikkalainen, P.: Progress with the tree-structured self-organizing map. In: 11th European Conference on Artificial Intelligence. European Committee for Artificial Intelligence (ECCAI) (August 1994)
4. Koskela, M., Laaksonen, J., Sjöberg, M., Muurinen, H.: PicSOM experiments in TRECVID 2005. In: Proceedings of the TRECVID 2005 Workshop, Gaithersburg, MD, USA, pp. 262–270 (November 2005)
5. Laaksonen, J., Koskela, M., Oja, E.: PicSOM—Self-organizing image retrieval with MPEG-7 content descriptions. IEEE Transactions on Neural Networks, Special Issue on Intelligent Multimedia Processing 13(4), 841–853 (2002)