Team, Support. “Convergence of the Variational Iteration Method for Solving a First-Order Linear System of PDEs With Constant Coeffcients: Momtri Torvattanabun, Sanoe Koonprasert”. Thai Journal of Mathematics 7, no. 3 (December 31, 2009): 1–13. Accessed December 22, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/173.