@Article{ DeRKol18, author = { De Rosa, Antonio and Kolasiński, Sławomir }, title = { Equivalence of the ellipticity conditions for geometric variational problems }, journal = { Comm. Pure App. Math. }, year = { 2020 }, pages = { }, URL = { http://cvgmt.sns.it/paper/4077/ }, note = { cvgmt preprint} }