AGERHOLM, S.; GORDON, M. Experiments with ZF Set Theory in HOL and Isabelle. BRICS Report Series, [S. l.], v. 2, n. 37, 1995. DOI: 10.7146/brics.v2i37.19940. Disponível em: https://tidsskrift.dk/brics/article/view/19940. Acesso em: 25 apr. 2024.