BATÍKOVÁ, Barbora; KEPKA, Tomáš; NĔMEC, Petr. ON HOW TO CONSTRUCT LEFT SEMIMODULES FROM THE RIGHT ONES. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 32, p. 561–578, 2014. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6173. Acesso em: 26 jul. 2026.