TY  - JOUR
AU  - Ralph Hugh Francis Denniston
TI  - Uniqueness of the Inversive Plane of Order 7.
JO  - Manuscripta mathematica
PY  - 1973
SP  - 21
EP  - 26
VL  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1973__8_154131/
ID  - MM2_1973__8_154131
ER  -