NYKYFORCHYN, O. R. On continuity, openness, and bicommutativity of functors in the category of compacta. Methods of Functional Analysis and Topology, [S. l.], v. 4, n. 4, p. 82–85, 1998. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/76. Acesso em: 18 dec. 2025.