ERIKSSON-BIQUE, S. Alternative proof of Keith–Zhong self-improvement and connectivity. Annales Fennici Mathematici, [S. l.], v. 44, n. 1, p. 407–425, 2019. DOI: 10.5186/aasfm.2019.4424. Disponível em: https://afm.journal.fi/article/view/135800. Acesso em: 26 nov. 2024.