%0 Journal Article
%A Chung-Chun Yang
%T On Deficiencies of Differential Polynomials.
%J Mathematische Zeitschrift
%D 1970
%P 197-204
%V 116
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1970__116_171382/
%F MZ_1970__116_171382