TY - JOUR AU - M. I. Vishik AU - A. V. Fursikov TI - Analytic first integrals of nonlinear parabolic equations and their applications JO - Sbornik. Mathematics PY - 1973 SP - 339 EP - 369 VL - 21 IS - 3 UR - http://geodesic.mathdoc.fr/item/SM_1973_21_3_a0/ LA - en ID - SM_1973_21_3_a0 ER -