Bhattacharya, Jayanta. “Why Ground Penetrating Radar (GPR) Should Be Allowed for Testing in the Mines”. Journal of Mines, Metals and Fuels 69, no. 3 (May 12, 2021): 72–72. Accessed April 27, 2024. https://informaticsjournals.com/index.php/jmmf/article/view/27780.