%0 Journal Article
%A M. B. Tabanov
%T New natural ellipsoidal coordinates and normal forms of equations for wave functions
%J Differencialʹnye uravneniâ
%D 1998
%P 1660-1665
%V 34
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1998_34_12_a10/
%G ru
%F DE_1998_34_12_a10