MATTILA, P.; OROBITG, J. On some properties of Hausdorff content related to instability. Annales Fennici Mathematici, [S. l.], v. 19, n. 2, p. 393–398, 1994. Disponível em: https://afm.journal.fi/article/view/134814. Acesso em: 13 may. 2024.