Heeto, Abdulrahman F., Yousif Y. Zaia, and Sami M. Gilyane. “Height Evaluation and Linear Accuracy of Digital Level, Total Station, GPS and Orthophoto”. Academic Journal of Nawroz University 7, no. 4 (December 8, 2018): 27–37. Accessed April 28, 2024. https://journals.nawroz.edu.krd/index.php/ajnu/article/view/268.