STURM, H. The true bisimulations for ’since’ and ’until’. Logic and Logical Philosophy, [S. l.], v. 10, n. 10, p. 173–183, 2004. DOI: 10.12775/LLP.2002.010. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2002.010. Acesso em: 25 jul. 2024.