@Article{ lusvit05, author = { Lussardi, Luca and Vitali, Enrico }, title = { Non-local approximation of free-discontinuity functionals with linear growth: the one-dimensional case }, journal = { Ann. Mat. Pura Appl. }, year = { 2007 }, volume = { 186 }, number = { 4 }, pages = { 721-744 }, URL = { http://cvgmt.sns.it/paper/1287/ }, note = { cvgmt preprint} }