TY  - JOUR
AU  - R. Bieri
AU  - J.A. Hillmann
TI  - Subnormal subgroups of 3-dimensional Poincaré duality groups.
JO  - Mathematische Zeitschrift
PY  - 1991
SP  - 67
EP  - 70
VL  - 206
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1991__206_1_174207/
ID  - MZ_1991__206_1_174207
ER  -