@Misc{ GigMos12, author = { Gigli, Nicola and Mosconi, Sun-ra J. N. }, title = { The Abresch-Gromoll inequality in a non-smooth setting }, journal = { }, year = { 2012 }, pages = { }, URL = { http://cvgmt.sns.it/paper/1918/ }, note = { cvgmt preprint} }