VARMA, G.S. “P-Wave Velocities in the Upper Mantle of the Indian Sub-Continent from Russian Nuclear Explosions And Inferred Upper Mantle Structure”. MAUSAM 21, no. 3 (July 1, 1970): 485–488. Accessed November 23, 2024. http://103.215.208.102/index.php/MAUSAM/article/view/5414.