%0 Journal Article
%A N. N. Petrov
%T The correctness of a time-optimality problem
%J Differencialʹnye uravneniâ
%D 1977
%P 1974-1980
%V 13
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_11_a8/
%G ru
%F DE_1977_13_11_a8