TY  - JOUR
AU  - Ph. J. Higgins
TI  - Groups with multiple operators
JO  - Matematika
PY  - 1959
SP  - 55
EP  - 106
VL  - 3
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1959_3_4_a1/
LA  - ru
ID  - MAT_1959_3_4_a1
ER  -