TY  - JOUR
AU  - Duff, G. F. D.
TI  - Differences, Derivatives, and Decreasing Rearrangements
JO  - Canadian journal of mathematics
PY  - 1967
SP  - 1153
EP  - 1178
VL  - 19
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-105-0/
DO  - 10.4153/CJM-1967-105-0
ID  - 10_4153_CJM_1967_105_0
ER  -