TY  - JOUR
AU  - V. Schneider
TI  - Semigroups and the n-sphere.
JO  - Semigroup forum
PY  - 1977
SP  - 93
EP  - 94
VL  - 15
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1977__15_134239/
ID  - SF_1977__15_134239
ER  -