BUTTENFIELD, B. P.; WEBER, C. R. Proactive Graphics for Exploratory Visualization of Biogeographical Data. Cartographic Perspectives, [S. l.], n. 19, p. 8–19, 1994. DOI: 10.14714/CP19.909. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp19-buttenfield-weber. Acesso em: 20 sep. 2024.