@Article{ FusGroNov17, author = { Fusco, Giorgio and Gronchi, Giovanni Federico and Novaga, Matteo }, title = { On the existence of heteroclinic connections }, journal = { São Paulo Journal of Mathematical Sciences }, year = { 2018 }, volume = { 12 }, number = { 1 }, pages = { 68-81 }, URL = { http://cvgmt.sns.it/paper/3345/ }, note = { cvgmt preprint} }