%0 Journal Article
%A A. V. Babin
%T Fractional powers of a nonlinear analytic differential operator
%J Sbornik. Mathematics
%D 1980
%P 9-38
%V 37
%N 1
%U http://geodesic.mathdoc.fr/item/SM_1980_37_1_a1/
%G en
%F SM_1980_37_1_a1