ØRBÆK, P. Programming with Hierarchical Maps. DAIMI Report Series, [S. l.], v. 34, n. 575, 2005. DOI: 10.7146/dpb.v34i575.7215. Disponível em: https://tidsskrift.dk/daimipb/article/view/7215. Acesso em: 29 mar. 2024.