PALSBERG, J.; SCHWARTZBACH, M. I. Static Typing for Object-Oriented Programming. DAIMI Report Series, [S. l.], v. 20, n. 355, 1991. DOI: 10.7146/dpb.v20i355.6585. Disponível em: https://tidsskrift.dk/daimipb/article/view/6585. Acesso em: 9 may. 2024.