@Misc{ AlbCriMaz18, author = { Alberti, Giovanni and Crippa, Gianluca and Mazzucato, Anna L. }, title = { Loss of regularity for the continuity equation with non-Lipschitz velocity field }, journal = { }, year = { 2018 }, pages = { }, URL = { http://cvgmt.sns.it/paper/3765/ }, note = { cvgmt preprint} }