%0 Journal Article
%A S. Ya. Serovaǐskiǐ
%T A~control problem in coefficients and an extended derivative with respect to a~convex set
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 2005
%P 46-55
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_2005_12_a5/
%G ru
%F IVM_2005_12_a5