EDELKAMP, S.; SULEWSKI, D.; PEREIRA, F. C.; COSTA, H. Collaborative Map Generation: Survey and Architecture Proposal. Research in Urbanism Series, [S. l.], v. 1, p. 159–178, 2008. DOI: 10.7480/rius.1.203. Disponível em: https://www.rius.ac/index.php/rius/article/view/64. Acesso em: 20 may. 2022.