TY  - JOUR
AU  - Wolfgang P. Kappe
TI  - Properties of Groups Related to the Second Center.
JO  - Mathematische Zeitschrift
PY  - 1967
SP  - 356
EP  - 368
VL  - 101
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1967__101_170851/
ID  - MZ_1967__101_170851
ER  -