%0 Journal Article
%A A. A. Tolstonogov
%T Relaxation in non-convex optimal control problems described by first-order evolution equations
%J Sbornik. Mathematics
%D 1999
%P 1689-1714
%V 190
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1999_190_11_a4/
%G en
%F SM_1999_190_11_a4