%0 Journal Article
%A A. A. Ligun
%T Best approximation of differentiable functions by algebraic polynomials
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1980
%P 53-60
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1980_4_a9/
%G ru
%F IVM_1980_4_a9