Uddin, M Alhaz, MAM Talukder, M Hasanuzzaman, and MST Mumtahinah. “A Unified KBM Method for Obtaining the Second Approximate Solution of a Third Order Weakly Non-Linear Differential System With Strong Damping and Slowly Varying Coefficients”. Journal of Bangladesh Academy of Sciences 35, no. 1 (July 8, 2011): 77–89. Accessed December 22, 2024. https://banglajol.info/index.php/JBAS/article/view/7973.