TY  - JOUR
AU  - S. Subbiah
AU  - K.D. jr. Magill
TI  - Another semigroup characterization of the simple closed curve.
JO  - Semigroup forum
PY  - 1980
SP  - 89
EP  - 90
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__20_134405/
ID  - SF_1980__20_134405
ER  -