Vasuki.C, Hemalatha.T, Nandhini.D, and Priyadharshini.R. “QRCPM (QR Code Car Parking Management)”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 7, no. 1, July 2021, pp. 1144-6, doi:10.61096/ijiarec.v7.iss1.2019.1144-1146.