%0 Journal Article
%T International Conference on Differential Equations and Related Questions In honour of the 90th anniversary of the birth of Academician I.\,G.~Petrovskii (1901--1973), Rector of Moscow State University from 1951 to 1973 (14th~joint session of the Petrovskii Seminar and the Moscow Mathematical Society, 29 May--3 June~1991)
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1991
%P 149-215
%V 46
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1991_46_6_a3/
%G en
%F RM_1991_46_6_a3