The Effectiveness of Unmanned Aerial Vehicle (UAV) for Digital Slope Mapping . International Journal of Engineering Technology and Sciences, [S. l.], v. 7, n. 2, p. 119–136, 2020. DOI: 10.15282/ijets.7.2.2020.1010. Disponível em: https://journal.ump.edu.my/ijets/article/view/6588. Acesso em: 1 jun. 2025.