TY  - DATA
AU  - Bieri, Robert.
AU  - Geoghegan, Ross,
TI  - Connectivity properties of group actions on non-positively curved spaces 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470403638 (online)
PY  - 2003///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0765
ER  -