%0 Journal Article
%A N. T. Tynyanskii
%A A. V. Arutyunov
%T On the system of Jacobi equations in a~time-optimal problem
%J Izvestiya. Mathematics 
%D 1983
%P 375-397
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1983_21_2_a8/
%G en
%F IM2_1983_21_2_a8