Maghfiroh, Anita Miftahul, Syevana Dita Musvika, and Vugar Abdullayev. “Performance Comparison of ECG Bio-Amplifier Between Single and Bi-Polar Supply Using Spectrum Analysis Based on Fast Fourier Transform”. Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics 4, no. 4 (August 17, 2025): 174–181. Accessed May 26, 2026. https://www.ijeeemi.org/index.php/ijeeemi/article/view/156.