%0 Journal Article
%A V. I. Mironenko
%T A functional taking extremal values on periodic solutions of a differential equation
%J Differencialʹnye uravneniâ
%D 1987
%P 1816-1818
%V 23
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1987_23_10_a24/
%G ru
%F DE_1987_23_10_a24