%0 Journal Article
%A T. Ando
%A K. Okubo
%T Constants Related to Operators of Class Cp.
%J Manuscripta mathematica
%D 1975
%P 385-394
%V 16
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1975__16_154351/
%F MM2_1975__16_154351