@Article{ confonleo01, author = { Conti, Sergio and Fonseca, Irene and Leoni, Giovanni }, title = { A $\Gamma$-convergence result for the two-gradient theory of phase transitions }, journal = { Comm. Pure Appl. Math. }, year = { 2002 }, volume = { 55 }, number = { 7 }, pages = { 857-936 }, URL = { http://cvgmt.sns.it/paper/1602/ }, note = { cvgmt preprint} }