Hassan, Raaid Noffi, Huda Shaker Ali, and Wafaa Hikmat Wadee. “Computer Simulation for the Effects of Optical Aberrations on Solar Images Using Karhunen-Loeve Polynomials”. Iraqi Journal of Science, no. 7 (July 31, 2021): 2463–2473. Accessed December 6, 2025. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2683.