KORZYUK, V. I. The Goursat problem for hyperbolic linear third order equations. Mathematical Modelling and Analysis, [S. l.], v. 6, n. 2, p. 270–279, 2001. DOI: 10.3846/13926292.2001.9637166. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9913. Acesso em: 17 may. 2025.