GRIGORIEV, O.; ZAITSEV, D. Basic Four-Valued Systems of Cyclic Negations. Bulletin of the Section of Logic, [S. l.], v. 51, n. 4, p. 507–533, 2022. DOI: 10.18778/0138-0680.2022.21. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/13649. Acesso em: 29 mar. 2024.