ACETO, L.; FOKKINK, W. J.; INGÓLFSDÓTTIR, A. A Note on an Expressiveness Hierarchy for Multi-exit Iteration. BRICS Report Series, [S. l.], v. 9, n. 40, 2002. DOI: 10.7146/brics.v9i40.21755. Disponível em: https://tidsskrift.dk/brics/article/view/21755. Acesso em: 19 apr. 2024.