TY - GEN AU - Fitzgibbon,W.E AU - Walker,Homer Franklin TI - Nonlinear diffusion SN - 0273010662 U1 - 519.2/33 PY - 1977/// CY - London, San Francisco PB - Pitman KW - Diffusion processes KW - Differential equations, Parabolic N1 - Contine bibliogr. si index ER -