RASILA, A.; TALPONEN, J. Convexity properties of quasihyperbolic balls on Banach spaces. Annales Fennici Mathematici, [S. l.], v. 37, n. 1, p. 215–228, 2012. DOI: 10.5186/aasfm.2012.3719. Disponível em: https://afm.journal.fi/article/view/135390. Acesso em: 25 nov. 2024.