TY  - JOUR
AU  - Gilbert Baumslag
AU  - Peter B. Shalen
TI  - Amalgamated products and finitely presented groups.
JO  - Commentarii mathematici Helvetici
PY  - 1990
SP  - 243
EP  - 254
VL  - 65
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140193/
ID  - CMH_1990__65_3_140193
ER  -