Hishamuddin, Muhamad Akmal Hafiz, and Mohamad Nazib Adon. “Development of High Blood Pressure Device Based on Pulse Transit Time Measurement for Hypertension Disease”. Evolution in Electrical and Electronic Engineering 3, no. 2 (November 14, 2022): 728–734. Accessed July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/8896.