BALOGH, Z.; T. TYSON, J.; WILDRICK, K. Frequence of Sobolev dimension distortion of horizontal subgroups in Heisenberg groups. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 17, n. 2, p. 655-683, 2017. DOI: 10.2422/2036-2145.201409_08. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/509. Acesso em: 27 may. 2025.