TY  - JOUR
AU  - S. Mukhopadhyay
TI  - On a certain property of the derivative
JO  - Fundamenta Mathematicae
PY  - 1970
SP  - 279
EP  - 284
VL  - 67
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-67-3-279-284/
DO  - 10.4064/fm-67-3-279-284
LA  - en
ID  - 10_4064_fm_67_3_279_284
ER  -