%0 Journal Article
%A V. V. Kovtunets
%T Differential properties of an operator of best approximation with interpolation
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1986
%P 36-42
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1986_12_a7/
%G ru
%F IVM_1986_12_a7