%0 Journal Article
%A A. A. Abdugapparov
%T On rational approximations of functions with a~convex derivative
%J Sbornik. Mathematics
%D 1974
%P 619-629
%V 22
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1974_22_4_a10/
%G en
%F SM_1974_22_4_a10