GRUSZCZYŃSKI, R.; PIETRUSZCZAK, A. A comparison of two systems of point-free topology. Bulletin of the Section of Logic, [S. l.], v. 47, n. 3, p. 187–200, 2018. DOI: 10.18778/0138-0680.47.3.04. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/4715. Acesso em: 25 apr. 2024.