The Bivariate Spline Approximate Solution to the Hyperbolic Equations with Variable Coefficients. Journal of Computational Mathematics, [S. l.], v. 10, n. 2, p. 112–128, 1992. Disponível em: https://global-sci.com/index.php/JCM/article/view/11058. Acesso em: 6 dec. 2025.