“Determination of the Annual Optimal Reliable Frequency for Different Transmitter Receiver Stations Distributed over the Iraqi Territory”.
Iraqi Journal of Science 62, no. 4 (April 30, 2021): 1386–1395. Accessed July 27, 2025.
https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2725.