Abili, Hailu Zewde. “Comparison of Vertical Accuracy of Open-Source Global Digital Elevation Models: A Case Study of Adama City, Ethiopia”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 4 (April 11, 2021): 1731–1744. Accessed May 5, 2024. https://turcomat.org/index.php/turkbilmat/article/view/1437.