SONG, Q.; LU, Y.; SHEN, J.; WANG, L. Regularity estimates for a class of degenerate elliptic equations. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, [S. l.], v. 10, n. 3, p. 645-667, 2011. DOI: 10.2422/2036-2145.2011.3.05. Disponível em: http://20.103.181.36/index.php/annaliscienze/article/view/244. Acesso em: 28 may. 2025.