Ahmad Shamsudin, Asma Afifah, et al. “Wireless Magnetometer for Vehicle Count and Monitoring on Thingspeak Dashboard”. Evolution in Electrical and Electronic Engineering, vol. 2, no. 1, May 2021, pp. 113-22, https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/1722.