R, Preetilatha, Ramkumar R, and Bharani M. “AN EFFICIENT STATIONERY VENDING MACHINE USING RFID CARD”. IJRDO - Journal of Mechanical And Civil Engineering 1, no. 4 (April 30, 2015): 158-163. Accessed May 18, 2024. https://ijrdo.org/index.php/mce/article/view/613.