TY - JOUR AU - K. B. Sabitov TI - Extremal properties of solutions of a class of parabolic systems and their applications JO - Differencialʹnye uravneniâ PY - 1990 SP - 287 EP - 297 VL - 26 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1990_26_2_a13/ LA - ru ID - DE_1990_26_2_a13 ER -