NIELSON, H. R.; NIELSON, F.; AMTOFT, T. Polymorphic Subtyping for Effect Analysis: The Integration. DAIMI Report Series, [S. l.], v. 25, n. 501, 1996. DOI: 10.7146/dpb.v25i501.7030. Disponível em: https://tidsskrift.dk/daimipb/article/view/7030. Acesso em: 9 may. 2024.