Mr.S.Nachimuthu, R.Sree devi, M. Sheela, S.Sinthu, and M.Vishnupriya. “Automatic Gas Booking System and Leakage Detection Using IOT”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 6, no. 1, Mar. 2018, pp. 194-7, https://ijiarec.com/ijiarec/article/view/435.