%0 Journal Article
%A F. G. Maksudov
%A Z. I. Ismailov
%T Normal extensions of second-order differential operators
%J Differencialʹnye uravneniâ
%D 1994
%P 1823-1824
%V 30
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1994_30_10_a21/
%G ru
%F DE_1994_30_10_a21