%0 Journal Article
%A V. I. Kazimirov
%A V. I. Plotnikov
%A I. M. Starobinets
%T A~necessary condition for an extremum in smooth problems with operator constraints
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1983
%P 21-26
%N 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1983_8_a3/
%G ru
%F IVM_1983_8_a3