BAT´IKOV´A, Barbora; KEPKA, Tom´aˇs; NˇEMEC, Petr. CHARACTERISTIC SEMIMODULES. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 37, p. 361–376, 2017. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6699. Acesso em: 16 sep. 2026.