%0 Journal Article
%A G. P. Gubanov
%T The approximation of continuous periodic functions of two variables by trigonometric polynomials
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1969
%P 30-34
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1969_5_a3/
%G ru
%F IVM_1969_5_a3