@Article{ AmbTre14, author = { Ambrosio, Luigi and Trevisan, Dario }, title = { Well posedness of Lagrangian flows and continuity equations in metric measure spaces }, journal = { Analysis and PDE }, year = { 2014 }, doi = { 10.2140/apde.2014.7.1179 }, volume = { 7 }, number = { 5 }, pages = { 1179-1234 }, URL = { http://cvgmt.sns.it/paper/2362/ }, note = { cvgmt preprint} }