KLIN, B.; SOBOCINSKI, P. Syntactic Formats for Free: An Abstract Approach to Process Equivalence. BRICS Report Series, [S. l.], v. 10, n. 18, 2003. DOI: 10.7146/brics.v10i18.21788. Disponível em: https://tidsskrift.dk/brics/article/view/21788. Acesso em: 31 may. 2023.