%0 Journal Article
%A V. K. Isaev
%T The Pontrjagin maximum principle and $\Pi$-splines
%J Doklady Akademii Nauk
%D 1981
%P 22-25
%V 256
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_256_1_a3/
%G ru
%F DAN_1981_256_1_a3