Putra, Faizal, Satria Mandala, and Miftah Pramudyo. 2022. “A Study of Feature Selection Method to Detect Coronary Heart Disease (CHD) on Photoplethysmography (PPG) Signals”. Building of Informatics, Technology and Science (BITS) 4 (2), 1018−1026. https://doi.org/10.47065/bits.v4i2.2259.