@Misc{ BucFraGia19, author = { Bucur, Dorin and FragalĂ , Ilaria and Giacomini, Alessandro }, title = { The Multiphase Mumford-Shah Problem }, journal = { }, year = { 2019 }, pages = { }, URL = { http://cvgmt.sns.it/paper/4184/ }, note = { cvgmt preprint} }