@article{GDZPPN000461822, title = {Quadratic Divergence of Geodesics in CAT (0) Spaces.}, journal = {Geometric and functional analysis}, volume = {4}, year = {1994}, pages = {37-51}, zbl = {0809.53054}, url = {http://dml.mathdoc.fr/item/GDZPPN000461822} }
Gersten, S.M. Quadratic Divergence of Geodesics in CAT (0) Spaces.. Geometric and functional analysis, Tome 4 (1994) pp. 37-51. http://gdmltest.u-ga.fr/item/GDZPPN000461822/