@Article{ carleatom, author = { Carriero, Michele and Leaci, Antonio and Tomarelli, Franco }, title = { Second order variational problems with free discontinuity and free gradient discontinuity }, journal = { ``Calculus of Variations: Topics from the Mathematical Heritage of Ennio De Giorgi'', D. Pallara ed., Quaderni di Matematica, 14, Dipartimento di Matematica Seconda Universita' di Napoli. }, year = { 2004 }, volume = { 14 }, pages = { 135-186 }, URL = { http://cvgmt.sns.it/paper/1289/ }, note = { cvgmt preprint} }