CANSELL, Dominique; MERY, Dominique. Foundations of the B method. Computing and Informatics, [S. l.], v. 22, n. 3-4, p. 221–256, 2012. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/456. Acesso em: 1 may. 2025.