PALSBERG, J.; SCHWARTZBACH, M. I. Three Discussions on Object-Oriented Typing. DAIMI Report Series, [S. l.], v. 20, n. 362, 1991. DOI: 10.7146/dpb.v20i362.6593. Disponível em: https://tidsskrift.dk/daimipb/article/view/6593. Acesso em: 9 may. 2024.