%0 Journal Article
%A A. V. Brukhtii
%T An optimality condition of Goh type for extremals that degenerate at a point
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1987
%P 46-50
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1987_3_a12/
%G ru
%F VMUMM_1987_3_a12