%0 Journal Article
%A M. S. Nikol'skii
%T Singular Sets of Extremal Controls in Optimal Control Problems
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 2019
%P 252-256
%V 304
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_2019_304_a15/
%G ru
%F TM_2019_304_a15