AMTOFT, T.; NIELSON, F.; NIELSON, H. R. Polymorphic Subtyping for Side Effects. DAIMI Report Series, [S. l.], v. 26, n. 529, 1997. DOI: 10.7146/dpb.v26i529.7058. Disponível em: https://tidsskrift.dk/daimipb/article/view/7058. Acesso em: 9 may. 2024.