D Prabu Ragavendiran, A. O. M. . “An Adaptive Non-Local Mean With Stationary Wavelet Transform (A-Nl-Swt) Filtering Method for Bio Metric Image Denoising”. Annals of the Romanian Society for Cell Biology, vol. 25, no. 6, June 2021, pp. 7795-02, https://www.annalsofrscb.ro/index.php/journal/article/view/6968.