TY  - JOUR
AU  - Micheal Dyer
TI  - Subgroups with projective abelianization and trivial multiplicator.
JO  - Commentarii mathematici Helvetici
PY  - 1984
SP  - 333
EP  - 340
VL  - 59
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1984__59_139979/
ID  - CMH_1984__59_139979
ER  -