CHOUSIONIS, V.; LI, S.; VELLIS, V.; ZIMMERMAN, S. Bi-Lipschitz embeddings of Heisenberg submanifolds into Euclidean spaces. Annales Fennici Mathematici, [S. l.], v. 45, n. 2, p. 931–955, 2020. DOI: 10.5186/aasfm.2020.4551. Disponível em: https://afm.journal.fi/article/view/135893. Acesso em: 20 may. 2024.