AL-HAWASY, J. A. A. .; MANSOUR, N. F. . The Galerkin-Implicit Method for Solving Nonlinear Variable Coefficients Hyperbolic Boundary Value Problem. Iraqi Journal of Science, [S. l.], v. 62, n. 11, p. 3997–4005, 2021. DOI: 10.24996/ijs.2021.62.11.20. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/2815. Acesso em: 29 may. 2022.