%0 Journal Article
%A S. M. Ponomarev
%T Semigroups of the classes $A^{n,\alpha}$ and the abstract Cauchy problem
%J Differencialʹnye uravneniâ
%D 1972
%P 2038-2047
%V 8
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1972_8_11_a15/
%G ru
%F DE_1972_8_11_a15