L. A. Al-Ani, “An Improved Method for the Determination of Airplane Radial Velocity Using Doppler Shift”, IJP, vol. 8, no. 13, pp. 89–96, Dec. 2010, Accessed: Mar. 13, 2025. [Online]. Available: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/834