Rajeev Kumar Agarwal3, L.K. Singh1, Ashish Kumar Saxena2*,. “Entropy Change of Non-Uniform Medium Due to Isothermal Propagation of Strong Spherical Shock Waves”. Recent Research in Science and Technology 3, no. 7 (September 28, 2011). Accessed May 5, 2024. https://updatepublishing.com/journal/index.php/rrst/article/view/741.