SIRIK, S. V. Estimation of the Accuracy of Finite-Element Petrov–Galerkin Method in Integrating the One-Dimensional Stationary Convection-Diffusion-Reaction Equation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 7, p. 937–961, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2034. Acesso em: 7 apr. 2025.