%0 Journal Article
%A N. P. Osmolovskii
%T Higher-order necessary and sufficient conditions for Pontryagin
%J Doklady Akademii Nauk
%D 1988
%P 1052-1056
%V 303
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_303_5_a5/
%G ru
%F DAN_1988_303_5_a5