BILET, V. V.; DOVGOSHEY, O. A. Boundedness of pretangent spaces to general metric spaces. Annales Fennici Mathematici, [S. l.], v. 39, n. 1, p. 73–82, 2014. DOI: 10.5186/aasfm.2014.3902. Disponível em: https://afm.journal.fi/article/view/135476. Acesso em: 25 nov. 2024.