IWANIEC, T.; KOSKELA, P.; ONNINEN, J. Mappings of finite distortion: Compactness. Annales Fennici Mathematici, [S. l.], v. 27, n. 2, p. 391–417, 2002. Disponível em: https://afm.journal.fi/article/view/135052. Acesso em: 11 apr. 2025.