KNUDSEN, J. L. A Hierarchical Co-operative Exception Handling Mechanism. DAIMI Report Series, [S. l.], v. 15, n. 204, 1986. DOI: 10.7146/dpb.v15i204.7555. Disponível em: https://tidsskrift.dk/daimipb/article/view/7555. Acesso em: 6 may. 2024.