%0 Journal Article
%A P. I. Ruban
%A K. V. Krasil'nikov
%T A method of approximating by trigonometric polynomial functions of two variables satisfying a Lipschitz condition
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1963
%P 135-136
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1963_3_a18/
%G ru
%F IVM_1963_3_a18