%0 Journal Article
%A V. K. Romanko
%T On the theory of operators of the form $\frac{d^m}{dt^m}-A$
%J Differencialʹnye uravneniâ
%D 1967
%P 1957-1970
%V 3
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1967_3_11_a10/
%G ru
%F DE_1967_3_11_a10