JANCAR, Petr; SRBA, Jirí. Highly Undecidable Questions for Process Algebras. BRICS Report Series, [S. l.], v. 11, n. 8, 2004. DOI: 10.7146/brics.v11i8.21833. Disponível em: https://tidsskrift.dk/brics/article/view/21833. Acesso em: 5 dec. 2025.