TY  - JOUR
TI  - On the group ring of a free product with amalgamation
JO  - Glasgow mathematical journal
PY  - 1980
SP  - 135
EP  - 138
VL  - 21
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500004274/
DO  - 10.1017/S0017089500004274
ID  - 10_1017_S0017089500004274
ER  -