COLLINGWOOD, E. F. Cluster set theorems for arbitrary functions with applications to function theory. Annales Fennici Mathematici, [S. l.], n. 336/8, 1964. DOI: 10.5186/aasfm.1964.336-08. Disponível em: https://afm.journal.fi/article/view/134030. Acesso em: 26 nov. 2024.