%0 Journal Article
%A O. A. Oleinik
%T On the 90th anniversary of the birth of Ivan Georgievich Petrovskii (1901--1973)
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1991
%P 3-5
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1991_6_a0/
%G ru
%F VMUMM_1991_6_a0