“A Study of Chosen an Optimum Type of Wavelet Filter for De-Noising an ECG signal”, Int. J. Curr. Eng. Technol., vol. 10, no. 5, pp. 749–756, Oct. 2020, Accessed: Mar. 13, 2026. [Online]. Available: https://ijcet.evegenis.org/index.php/ijcet/article/view/1411