M.Srinevasan, S.Elanselvan, P.Miruthula Samyuktha, R.Monisha, and R.Nivedha. “Enhanced Surveillance System for ATM Using PIC Microcontroller”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 7, no. 1, Mar. 2019, pp. 1334-42, https://ijiarec.com/ijiarec/article/view/1137.