SJÖDIN, T. Thinness in non-linear potential theory for non-isotropic Sobolev spaces. Annales Fennici Mathematici, [S. l.], v. 22, n. 2, p. 313–338, 1997. Disponível em: https://afm.journal.fi/article/view/134894. Acesso em: 25 nov. 2024.