Hassan, Danish, Hamza Khan, Muhammad Fahim Akhter, Muhammad Danish Khan, and Shaheen Abbas. “A STUDY OF LONG-TERM SUNSPOTS AND K-INDEX GEOMETRIC CYCLES USING PROBABILISTIC MODELING: Array”. Journal of Mountain Area Research 7 (May 16, 2022): 44–55. Accessed March 11, 2025. https://journal.kiu.edu.pk/index.php/JMAR/article/view/141.