@Article{ ambcrifig, author = { Ambrosio, Luigi and Crippa, Gianluca and Figalli, Alessio and Spinolo, Laura Valentina }, title = { Some new well-posedness results for continuity and transport equations, and applications to the chromatography system }, journal = { SIAM J. Math. Anal. }, year = { 2009 }, volume = { 41 }, number = { 5 }, pages = { 1890-1920 }, URL = { http://cvgmt.sns.it/paper/309/ }, note = { cvgmt preprint} }