@Article{ albbiacri, author = { Alberti, Giovanni and Bianchini, Stefano and Crippa, Gianluca }, title = { A uniqueness result for the continuity equation in two dimensions }, journal = { Journal of the European Mathematical Society (JEMS) }, year = { 2014 }, doi = { 10.4171/JEMS/431 }, volume = { 16 }, number = { 2 }, pages = { 201-234 }, URL = { http://cvgmt.sns.it/paper/700/ }, note = { cvgmt preprint} }