Nafiza, C. Senthilkumar, Fathima Zaheera, Bochu Lakshakoti, L. Malliga. (2021). Design and Implementation of RFID-GSM based Signal Jump E-Challan System Using Raspberry Pi. Design Engineering, 10221-10229. Retrieved from http://thedesignengineering.com/index.php/DE/article/view/6081