%0 Journal Article
%A B. D. Boyanov
%T Characterization and existence of optimal quadrature formulas for a class of differentiable functions
%J Doklady Akademii Nauk
%D 1977
%P 1233-1236
%V 232
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1977_232_6_a0/
%G ru
%F DAN_1977_232_6_a0