%0 Journal Article
%A J. Brinkhuis
%T On the Fermat--Lagrange principle for mixed smooth convex extremal problems
%J Sbornik. Mathematics
%D 2001
%P 641-649
%V 192
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_2001_192_5_a0/
%G en
%F SM_2001_192_5_a0