TY  - JOUR
AU  - George M. Bergman
TI  - Hyperidentities of groups and semigroups. (Short Communication).
JO  - Aequationes mathematicae
PY  - 1981
SP  - 315
EP  - 317
VL  - 22
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1981__22_136883/
ID  - AM2_1981__22_136883
ER  -