V.Subedha, A.S.Khyathi, C.Bhavitha, and T.Charishma. 2018. “A STUDY OF SMART GAS LEVEL MONITORING, BOOKING AND GAS DETECTION OVER IOT”. International Journal of Advance Research in Engineering, Science & Technology 5 (3):974-80. https://ijarest.org/index.php/ijarest/article/view/1415.