%0 Journal Article
%A Duff, G. F. D.
%T Differences, Derivatives, and Decreasing Rearrangements
%J Canadian journal of mathematics
%D 1967
%P 1153-1178
%V 19
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-105-0/
%R 10.4153/CJM-1967-105-0
%F 10_4153_CJM_1967_105_0