TY  - JOUR
AU  - K. Urbanik
TI  - Remarks on symmetrical operations
JO  - Colloquium Mathematicum
PY  - 1966
SP  - 1
EP  - 9
VL  - 15
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-15-1-1-9/
DO  - 10.4064/cm-15-1-1-9
LA  - en
ID  - 10_4064_cm_15_1_1_9
ER  -