Deepak Kumar , Moti Ram , P K Gangwar. “Effect of Gravitation on the Motion of Cylindrical Imploding Shock Wave in Dusty Gas”. International Journal of Emerging Trends in Science and Technology, Vol. 4, no. 08, Aug. 2017, pp. 5838-47, http://igmpublication.org/ijetst.in/index.php/ijetst/article/view/1343.