Y. H. Ali and R. A. Medhat, “Enhancement of Principal Component Analysis using Gaussian Blur Filter”, Iraqi Journal of Science, vol. 59, no. 3B, pp. 1509–1517, Aug. 2018, Accessed: Dec. 06, 2025. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/402