BONCHIS, C.; IZBASA, C.; CIOBANU, G. Information Theory over Multisets. COMPUTING AND INFORMATICS, [S. l.], v. 27, n. 3+, p. 441–451, 2012. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/242. Acesso em: 27 mar. 2023.