@Article{ CarLeaTom12, author = { Carriero, Michele and Leaci, Antonio and Tomarelli, Franco }, title = { Free gradient discontinuity and image segmentation }, journal = { J. Math. Sci. (N.Y.) }, year = { 2012 }, volume = { 181 }, number = { 6 }, pages = { 805 - 819 }, URL = { http://cvgmt.sns.it/paper/1835/ }, note = { cvgmt preprint} }