A Generalized KdV-Family with Variable Coefficients in (2 + 1) Dimensions. - Tadashi Kobayashi; Kouichi Toda (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

A modified Calogero-Bogoyavlenskii-Schiff equation with variable coefficients and its non-isospectral Lax pair. - Tadashi Kobayashi; Kouichi Toda (JSIAM Lett., 2011)