%0 Journal Article
%A F. V. Guseinov
%T A~general existence theorem for multidimensional extremal problems
%J Sbornik. Mathematics
%D 1987
%P 455-461
%V 57
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1987_57_2_a9/
%G en
%F SM_1987_57_2_a9