%0 Journal Article
%A I. M. Petrov
%T The order of approximation of functions of class $Z\alpha$ by certain polynomial operators
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1960
%P 188-193
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1960_1_a19/
%G ru
%F IVM_1960_1_a19