Zhao, Zhihong, Yingzhen Lin, and Jing Niu. “Convergence Order of the Reproducing Kernel Method for Solving Boundary Value Problems”. Mathematical Modelling and Analysis 21, no. 4 (June 23, 2016): 466–477. Accessed May 9, 2025. https://journals.vilniustech.lt/index.php/MMA/article/view/828.