%0 Journal Article %A S. M. Shugrin %T A system of inequalities connected with elliptic and parabolic operators %J Differencialʹnye uravneniâ %D 1984 %P 1975-1985 %V 20 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_11_a17/ %G ru %F DE_1984_20_11_a17