HUFFMAN, D. A Technique for Encoding Elevation Changes Along a Route. Cartographic Perspectives, [S. l.], n. 63, p. 83–86, 2009. DOI: 10.14714/CP63.165. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp63-huffman. Acesso em: 11 dec. 2024.