“Comparison in Terms of Accuracy of DEMs Extracted from SRTM X-SAR Data and SRTM C-SAR Data: A Case Study of the Thi-Qar Governorate AL-Shtra City”. International Journal of Current Engineering and Technology, vol. 6, no. 5, Oct. 2016, pp. 1826-30, https://doi.org/10.14741/.