MCKINNA, J.; POLLACK, R. Some Lambda Calculus and Type Theory Formalized. BRICS Report Series, [S. l.], v. 4, n. 51, 1997. DOI: 10.7146/brics.v4i51.19272. Disponível em: https://tidsskrift.dk/brics/article/view/19272. Acesso em: 5 may. 2024.