@Misc{ NicSer18, author = { Nicolussi Golo, Sebastiano and Serra Cassano, Francesco }, title = { The Bernstein problem for Lipschitz intrinsic graphs in the Heisenberg group }, journal = { }, year = { 2018 }, pages = { }, URL = { http://cvgmt.sns.it/paper/4042/ }, note = { cvgmt preprint} }