NIELSEN, Mogens; SUNESEN, Kim. Behavioural Equivalence for Infinite Systems—Partially Decidable!. BRICS Report Series, [S. l.], v. 2, n. 55, 1995. DOI: 10.7146/brics.v2i55.19956. Disponível em: https://tidsskrift.dk/brics/article/view/19956. Acesso em: 5 dec. 2025.