@Article{ albambcab, author = { Alberti, Giovanni and Ambrosio, Luigi and Cabré, Xavier }, title = { On a long standing conjecture of E. De Giorgi: old and recent results }, journal = { Acta Appl. Math. }, year = { 2000 }, volume = { 65 (2001) }, number = { 1 }, pages = { 9-33 }, URL = { http://cvgmt.sns.it/paper/1030/ }, note = { cvgmt preprint} }