A Remark About Hyperbolic Equations with Log-Lipschitz Coefficients. Journal of Partial Differential Equations, [S. l.], v. 10, n. 3, p. 284–288, 1997. Disponível em: https://www.global-sci.com/index.php/jpde/article/view/3861. Acesso em: 6 dec. 2025.