%0 Journal Article
%A O. D. Gabisoniya
%T The magnitude of the best approximation of a~function of several variables by means of polynomials in Haar functions
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1968
%P 39-46
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1968_1_a5/
%G ru
%F IVM_1968_1_a5