%0 Journal Article
%A A. Vagharshakyan
%T Invariant transformations for the Sturm--Liouville operator
%J Zapiski Nauchnykh Seminarov POMI
%D 2005
%P 25-54
%V 327
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2005_327_a2/
%G en
%F ZNSL_2005_327_a2