@Misc{ BalFraPan15, author = { Baldi, Annalisa and Franchi, Bruno and Pansu, Pierre }, title = { Gagliardo-Nirenberg inequalities for differential forms in Heisenberg groups }, journal = { }, year = { 2015 }, pages = { }, URL = { http://cvgmt.sns.it/paper/2671/ }, note = { cvgmt preprint} }