NIELSON, H. R. Computation sequences: A way to characterize subclasses of attribute grammars. DAIMI Report Series, [S. l.], v. 10, n. 138, 1981. DOI: 10.7146/dpb.v10i138.7946. Disponível em: https://tidsskrift.dk/daimipb/article/view/7946. Acesso em: 9 may. 2024.