TY  - JOUR
AU  - Frank Röhl
TI  - On the Isomorphism Problem for Integral Group-Rings of Circle-Groups.
JO  - Mathematische Zeitschrift
PY  - 1982
SP  - 419
EP  - 422
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1982__180_173200/
ID  - MZ_1982__180_173200
ER  -