Sirik SV. Estimation of the Accuracy of Finite-Element Petrov–Galerkin Method in Integrating the One-Dimensional Stationary Convection-Diffusion-Reaction Equation. Ukr. Mat. Zhurn. [Internet]. 2015 Jul. 25 [cited 2025 Dec. 5];67(7):937-61. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2034