NIELSEN, M.; HUNE, T. S. Timed Bisimulation and Open Maps. BRICS Report Series, [S. l.], v. 5, n. 4, 1998. DOI: 10.7146/brics.v5i4.19277. Disponível em: https://tidsskrift.dk/brics/article/view/19277. Acesso em: 5 may. 2024.