TY  - BOOK
AU  - Bridson, Martin R. 
AU  -  Haefliger
TI  - Metric spaces of non-positive curvature
SN  - 9783642083990
U1  - 514.32 
PY  - 2010///
CY  - Berlin
PB  - Springer-Verlag
KW  - Mathematics ; metric space
KW  - MA 601, 741, 711
ER  -