%0 Journal Article
%A M. A. Valiev
%A S. A. Lomov
%T A general approach to the asymptotic integration of singularly perturbed problems in the case of an unbounded nonselfadjoint operator
%J Doklady Akademii Nauk
%D 1977
%P 11-13
%V 236
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1977_236_1_a0/
%G ru
%F DAN_1977_236_1_a0