K, Manikandan, and Mohanasundaram K. “ECG Measurements to Emphasize Atrial Potentials Using Modified Limb Lead System”. International Journal of Engineering & Technology 7, no. 3.12 (July 20, 2018): 632–636. Accessed April 28, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/16443.