Tripathi, Durgesh, and Vijay Kumar Shukla. “DWT Based PCA and K-Means Clustering Block Level Approach for SAR Image De-Noising”. International Journal of Computer Sciences and Engineering, vol. 4, no. 12, Nov. 2025, pp. 87-91, https://ijcse.isroset.org/index.php/j/article/view/1280.