%0 Journal Article
%A S. Z. Rafal'son
%T Generalized shift, generalized convolution and some extremal relations of the theory of approximation of function
%J Zapiski Nauchnykh Seminarov POMI
%D 1986
%P 150-157
%V 149
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1986_149_a13/
%G ru
%F ZNSL_1986_149_a13