%0 Journal Article
%A F. E. Lomovtsev
%T Necessary and sufficient conditions for the unique solvability of the Cauchy problem for second-order hyperbolic differential equations with a variable domain of operator coefficients
%J Differencialʹnye uravneniâ
%D 1992
%P 873-886
%V 28
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1992_28_5_a17/
%G ru
%F DE_1992_28_5_a17