Signal processing in neuron network: a radically different view. - Hiroko M. Sakai; Ken-ichi Naka (SMC, 1989)

Movement and Memory Function in Biological Neural Networks. - Naohiro Ishii; Ken-ichi Naka (Int. J. Artif. Intell. Tools, 1995)

Function of Biological Asymmetrical Neural Networks. - Naohiro Ishii; Ken-ichi Naka (IWANN, 1997)