HEWSON, J. Field Methods in Remote Sensing. Cartographic Perspectives, [S. l.], n. 56, p. 52–54, 2007. DOI: 10.14714/CP56.307. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp56-hewson. Acesso em: 19 apr. 2024.