Goh, C.C., L.M. Kamarudin, S. Sudin, R. Visvanathan, and A. Zakaria. 2018. “Cloud-Based In-Vehicle Air Quality Monitoring System With GSM Module”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 10 (1-14):77-81. https://jtec.utem.edu.my/jtec/article/view/3996.