V. Sadhasivam, K. Logaarasi, and T. Raja. “On the Interval Oscillation of Impulsive Partial Differential Equations With Damping Term”. International Journal of Mathematics And its Applications 6, no. 1 - B (January 20, 2018): 229–242. Accessed May 9, 2024. http://ijmaa.in/index.php/ijmaa/article/view/919.