TY  - JOUR
AU  - B. Davvaz
TI  - On Polygroups and Permutation Polygroups
JO  - Mathematica balkanica
PY  - 2000
SP  - 41
VL  - 14
IS  - 1-2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_2000_14_1-2_a3/
ID  - MABA_2000_14_1-2_a3
ER  -