“Effect of Total, Northern and Southern Hemisphere Sunspot Number (Ri, Rn and Rs) on F2- Layer Critical Frequencies at Mid- Latitude Rome Station During the Descending Phase of Solar Cycle 23” (2023)
Iraqi Journal of Science, 57(3A), pp. 2063–2074. Available at:
https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/9962 (Accessed: 7 April 2025).