SCHWARTZ, M. D. Geoscope. Cartographic Perspectives, [S. l.], n. 25, p. 40–41, 1996. DOI: 10.14714/CP25.745. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp25-schwartz. Acesso em: 1 may. 2024.