Che Alaha, Muhammad Amir, and Mohamad Nazib Adon. “IoT-Blood Pressure Monitoring System Based on Photoplethysmogram (PPG) and Electrocardiogram (ECG) Sensor”. Evolution in Electrical and Electronic Engineering 6, no. 1 (May 9, 2025): 8–16. Accessed April 8, 2026. https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/16840.