Paras Chawla , Nidhi Sindhwani , Rohit Anand. “Smart Coal Payload Delivery System Using Pic Microcontroller”. International Journal of Advanced Science and Technology 29, no. 10s (May 20, 2020): 1485 - 1490. Accessed April 30, 2026. http://sersc.org/journals/index.php/IJAST/article/view/16520.