%0 Journal Article
%A T. B. Kasumov
%T Fractional powers of quasidifferential operators and theorems on the property of being a basis
%J Differencialʹnye uravneniâ
%D 1989
%P 729-731
%V 25
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1989_25_4_a22/
%G ru
%F DE_1989_25_4_a22