Atiwanwong, T., and S. Hongprasit. “A Low-Power Real-Time Pollution Monitoring System Using ESP LoRa: Doi: 10.14456/Mijet.2020.8”. Engineering Access, vol. 6, no. 1, Jan. 2020, pp. 36-40, https://ph02.tci-thaijo.org/index.php/mijet/article/view/10.14456.mijet.2020.8.