NIELSON, F.; NIELSON, H. R.; AMTOFT, T. Polymorphic Subtyping for Effect Analysis: the Algroithm. DAIMI Report Series, [S. l.], v. 25, n. 503, 1996. DOI: 10.7146/dpb.v25i503.7032. Disponível em: https://tidsskrift.dk/daimipb/article/view/7032. Acesso em: 8 may. 2024.