Complexity Optimized Vector Quantization: A Neutral Network Approach. - Joachim M. Buhmann; Hans Kühnel (Data Compression Conference, 1992)

Complexity Optimized Data Clustering by Competitive Neural Networks. - Joachim M. Buhmann; Hans Kühnel (Neural Comput., 1993)

Vector quantization with complexity costs. - Joachim M. Buhmann; Hans Kühnel (IEEE Trans. Inf. Theory, 1993)