H. M. Kotresh, S. Rakshitha, R. Sahana, and P. Rakshita, “Automated Smart Way Billing System in Shopping Malls using Arduino”, IJRESM, vol. 4, no. 7, pp. 200–203, Jul. 2021, Accessed: May 04, 2024. [Online]. Available: https://journal.ijresm.com/index.php/ijresm/article/view/1032