%0 Journal Article
%A V. I. Ryazanov
%T On the accuracy of some convergence theorems
%J Doklady Akademii Nauk
%D 1990
%P 317-319
%V 315
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_315_2_a14/
%G ru
%F DAN_1990_315_2_a14