%0 Journal Article
%A K. B. Mansimov
%T Optimality of quasisingular controls in Goursat--Darboux systems
%J Differencialʹnye uravneniâ
%D 1986
%P 1952-1960
%V 22
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1986_22_11_a12/
%G ru
%F DE_1986_22_11_a12