Giri, Sushant Raj, Prashant Lakhemaru, Anil Shrestha, Sanjeev Lama, and Shuveksha Sapkota. “Design, Fabrication and Testing of Gravity-Powered Light”. Journal of the Institute of Engineering 15, no. 1 (February 16, 2020): 170–176. Accessed July 17, 2024. https://nepjol.info/index.php/JIE/article/view/27726.