BORZOOEI, R.A.; SHOHANI , J. On generalized Hilbert algebras. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 29, p. 71–86, 2012. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6059. Acesso em: 18 jul. 2026.