%0 Journal Article
%A V. A. Sadovnichii
%A A. Yu. Popov
%T An estimate for the best approximation of solutions of the Sturm--Liouville equation with an analytic potential by partial sums of asymptotic series
%J Differencialʹnye uravneniâ
%D 1999
%P 498-506
%V 35
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1999_35_4_a7/
%G ru
%F DE_1999_35_4_a7