GOLDBERG, M. On the Recursive Enumerability of Fixed-Point Combinators. BRICS Report Series, [S. l.], v. 11, n. 25, 2004. DOI: 10.7146/brics.v11i25.21850. Disponível em: https://tidsskrift.dk/brics/article/view/21850. Acesso em: 13 apr. 2024.