Correction to "Higher-order Nonlinear System of Equations of Changing Type". Journal of Partial Differential Equations, [S. l.], v. 3, n. 3, p. 93–96, 1990. Disponível em: https://www.global-sci.com/index.php/jpde/article/view/3646. Acesso em: 6 dec. 2025.