%0 Journal Article
%A Nguyên Thị Thiêu Hoa
%T Some extremal problems on classes of functions determined by linear differential operators
%J Sbornik. Mathematics
%D 1991
%P 213-255
%V 68
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1991_68_1_a11/
%G en
%F SM_1991_68_1_a11