@Article{ neg03, author = { Negri, Matteo }, title = { A discontinuous finite element approach for the approximation of free discontinuity problems }, journal = { Adv. Math. Sci. Appl. }, year = { 2005 }, volume = { 15 }, pages = { 283-306 }, URL = { http://cvgmt.sns.it/paper/716/ }, note = { cvgmt preprint} }