NOMIROVS'KII, D. A. Convergence of the Galerkin method for a wave equation with singular right-hand side. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 58, n. 6, p. 778–786, 2006. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3495. Acesso em: 14 apr. 2025.