%0 Journal Article
%A S. A. Stepin
%T Non-selfadjoint singular perturbations and spectral properties of the~Orr--Sommerfeld boundary-value problem
%J Sbornik. Mathematics
%D 1997
%P 137-156
%V 188
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1997_188_1_a6/
%G en
%F SM_1997_188_1_a6