VARACCA, D. The Powerdomain of Indexed Valuations. BRICS Report Series, [S. l.], v. 9, n. 38, 2002. DOI: 10.7146/brics.v9i38.21753. Disponível em: https://tidsskrift.dk/brics/article/view/21753. Acesso em: 27 nov. 2022.