REZAEI, A.; SAEID, A. B.; WALENDZIAK, A. Some results on pseudo-Q algebras. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 16, p. 61–72, 2018. Disponível em: https://studmath.uken.krakow.pl/article/view/12972. Acesso em: 21 jul. 2026.