Ahmed, Syed Hassaan, Syed Kashif Abbas, and Tahir Zaidi. “99.9% Accurate R Wave Extraction from ECG Signal Using Wavelet Transform”. British Journal of Healthcare and Medical Research 4, no. 3 (July 14, 2017): 01. Accessed April 19, 2024. https://journals.scholarpublishing.org/index.php/JBEMi/article/view/2898.