GÓRKA, P. Looking for compactness in Sobolev spaces on noncompact metric spaces. Annales Fennici Mathematici, [S. l.], v. 43, n. 1, p. 531–540, 2018. DOI: 10.5186/aasfm.2018.4332. Disponível em: https://afm.journal.fi/article/view/135742. Acesso em: 22 nov. 2024.