LIU, Z.; REZA PAKZAD, M. Rigidity and regularity of co-dimension one Sobolev isometric immersions. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 14, n. 3, p. 767-817, 2015. DOI: 10.2422/2036-2145.201302_001. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/392. Acesso em: 27 may. 2025.