TY  - JOUR
AU  - Kung-Fu Ng
TI  - On a Computation Rule for Polars.
JO  - Mathematica Scandinavica
PY  - 1970
SP  - 14
EP  - 16
VL  - 26
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1970__26_166121/
ID  - MS2_1970__26_166121
ER  -