Das, Prakash Kumar, Debabrata Singh, and Madan Mohan Panja. “Some Modifications on RCAM for Getting Accurate Closed-Form Approximate Solutions of Duffing- and Lienard-Type Equations”. JOURNAL OF ADVANCES IN MATHEMATICS 16 (January 31, 2019): 8213–8225. Accessed March 28, 2024. https://rajpub.com/index.php/jam/article/view/8017.