H. SEEDAHMED, Gamal. A Methodology for Checking the Validity of an Existing Contour Map Using RTK-GPS and GIS. University of Khartoum Engineering Journal, [S. l.], v. 7, n. 1, 2022. DOI: 10.53332/kuej.v7i1.989. Disponível em: https://uofkej.uofk.edu/index.php/uofkej/article/view/174. Acesso em: 1 sep. 2025.