%0 Journal Article
%A P. L. Ul'yanov
%T Classes of infinitely differentiable functions
%J Doklady Akademii Nauk
%D 1989
%P 287-290
%V 305
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_305_2_a7/
%G ru
%F DAN_1989_305_2_a7