%0 Journal Article %A A. V. Ivanov %T A priori estimates for solutions of linear second-order equations of elliptic and parabolic types %J Doklady Akademii Nauk %D 1965 %P 1270-1273 %V 161 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_161_6_a5/ %G ru %F DAN_1965_161_6_a5