HEYMAN, D. Student Web-Mapping Competition 2009. Cartographic Perspectives, [S. l.], n. 66, p. 85–87, 2010. DOI: 10.14714/CP66.101. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp66-heyman. Acesso em: 3 may. 2024.