%0 Journal Article
%A A. I. Tret'yak
%T On necessary conditions for odd optimability of high speed prbblem for the linear on control systems
%J Sbornik. Mathematics
%D 1991
%P 47-63
%V 70
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1991_70_1_a3/
%G en
%F SM_1991_70_1_a3