ADIMURTHI; MALLICK, A. A Hardy type inequality on fractional order Sobolev spaces on the Heisenberg group. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 18, n. 3, p. 917-949, 2018. DOI: 10.2422/2036-2145.201604_010. Disponível em: https://journals-dev.sns.it/index.php/annaliscienze/article/view/602. Acesso em: 26 may. 2026.