Wearable Device for Monitoring Heart Rate Based on Low-Cost Piezoresistive Sensor. - Vu Ngoc Quy; Do Tran Xuan Duy; Dinh Trung Kien; Vu Hong Tu; Qijun Sun; Vellaisamy A. L. Roy; Viet-Thanh Pham; Toan Thanh Dao (MOCAST, 2019)