ACETO, L.; FOKKINK, W. J.; GLABBEEK, R. J. van; INGÓLFSDÓTTIR, A. Axiomatizing Prefix Iteration with Silent Steps. BRICS Report Series, [S. l.], v. 2, n. 56, 1995. DOI: 10.7146/brics.v2i56.19957. Disponível em: https://tidsskrift.dk/brics/article/view/19957. Acesso em: 18 dec. 2024.