NACIS NEWS, M. NACIS News. Cartographic Perspectives, [S. l.], n. 05, p. 40–41, 1990. DOI: 10.14714/CP05.1134. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp05-nacis-news. Acesso em: 4 may. 2026.