NEELAVATHI, and R. KRISHNAKUMAR. “IOT BASED BASED CHILD RESCUE SYSTEM IN OPEN BOREWELL WITH SMS ALERT AND LOCATION”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 10, no. 1, Feb. 2022, pp. 35-41, https://ijiarec.com/ijiarec/article/view/424.