%0 Journal Article
%A L. N. Lyapin
%T Set-valued mappings in the theory of integral equations with a discontinuous operator
%J Differencialʹnye uravneniâ
%D 1973
%P 1511-1519
%V 9
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1973_9_8_a14/
%G ru
%F DE_1973_9_8_a14