%0 Journal Article %A E. F. Lelikova %T On the asymptotics of the fundamental solution of a~parabolic equation in the critical case %J Sbornik. Mathematics %D 1990 %P 581-594 %V 67 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1990_67_2_a13/ %G en %F SM_1990_67_2_a13