%0 Journal Article
%A R. A. Raitsin
%T The best mean square approximation, by polynomials and by entire functions of finite degree, of functions which have algebraic singular point
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1969
%P 59-61
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1969_4_a9/
%G ru
%F IVM_1969_4_a9