%0 Journal Article
%A P. E. Sobolevskii
%T Differential equations with unbounded operators which generate nonanalytic semigroups
%J Doklady Akademii Nauk
%D 1968
%P 292-295
%V 183
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_183_2_a11/
%G ru
%F DAN_1968_183_2_a11