%0 Journal Article
%A Yu. L. Daletskii
%A E. A. Fadeeva
%T Hyperbolic equations with variable operator-valued coefficients
%J Differencialʹnye uravneniâ
%D 1976
%P 881-891
%V 12
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_5_a9/
%G ru
%F DE_1976_12_5_a9