ACETO, L.; FOKKINK, W. J.; INGÓLFSDÓTTIR, A. 2-Nested Simulation is not Finitely Equationally Axiomatizable. BRICS Report Series, [S. l.], v. 7, n. 20, 2000. DOI: 10.7146/brics.v7i20.20147. Disponível em: https://tidsskrift.dk/brics/article/view/20147. Acesso em: 19 apr. 2024.