RIIS, H. Subclasses of Attribute Grammars. DAIMI Report Series, [S. l.], v. 9, n. 114, 1980. DOI: 10.7146/dpb.v9i114.6532. Disponível em: https://tidsskrift.dk/daimipb/article/view/6532. Acesso em: 8 may. 2024.