TY  - JOUR
AU  - Heineken, Hermann
TI  - On E-groups in the sense of Peng
JO  - Glasgow mathematical journal
PY  - 1989
SP  - 231
EP  - 242
VL  - 31
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007783/
DO  - 10.1017/S0017089500007783
ID  - 10_1017_S0017089500007783
ER  -