FLÓREZ, J. A. Topology of Modal Propositions Depicted by Peirce’s Gamma Graphs: Line, Square, Cube, and Four-Dimensional Polyhedron. Logic and Logical Philosophy, [S. l.], v. 31, n. 3, p. 457–470, 2021. DOI: 10.12775/LLP.2021.017. Disponível em: https://apcz.umk.pl/LLP/article/view/35036. Acesso em: 29 mar. 2024.