On Linear Homogeneous Biwave Equations. Journal of Partial Differential Equations, [S. l.], v. 37, n. 1, p. 59–87, 2024. DOI: 10.4208/jpde.v37.n1.4. Disponível em: https://global-sci.com/index.php/jpde/article/view/4415. Acesso em: 6 dec. 2025.