%0 Journal Article
%A V. I. Blagodatskikh
%T Sufficient optimality conditions for differential imbeddings
%J Izvestiya. Mathematics 
%D 1974
%P 621-630
%V 8
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1974_8_3_a9/
%G en
%F IM2_1974_8_3_a9