AHN, S. S.; KIM, H. . S.; SONG, S.-Z.; JUN, Y. B. Dokdo Filters and Deductive Systems of Sheffer Stroke Hilbert Algebras. European Journal of Pure and Applied Mathematics, [S. l.], v. 16, n. 3, p. 1862–1877, 2023. DOI: 10.29020/nybg.ejpam.v16i3.4872. Disponível em: https://ejpam.com/index.php/ejpam/article/view/4872. Acesso em: 29 nov. 2023.