TY  - JOUR
AU  - Kenneth S. Brown
AU  - Ross Geoghegan
TI  - Cohomology with free coefficients of the fundamental group of a graph of groups.
JO  - Commentarii mathematici Helvetici
PY  - 1985
SP  - 31
EP  - 45
VL  - 60
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1985__60_139998/
ID  - CMH_1985__60_139998
ER  -