Y. AL-Bayati A, J. Al-Sawoor A, A. Samarji M. The Derivation of Convergence Analysis for the Multistage Adomian Decomposition Method for solving the Autonomous Van der Pol system. EDUSJ [Internet]. 1999 Nov. 30 [cited 2025 Aug. 4];24(3):133-48. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17703