Algorithms for Finding in the Lump Both Bounds of Chromatic Number of a Graph. - T. Sakaki; K. Nakashima; Y. Hattori (Comput. J., 1976)

Retrieval of Patterns and Symbols Using Pattern-Symbol Network with Nonlinear Dynamics. - Y. Hattori; T. Furuhash (ICONIP (1), 1997)