CZERNOUS, W. Generalized solutions of mixed problems for first-order partial functional differential equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 58, n. 6, p. 804–828, 2006. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3497. Acesso em: 27 apr. 2025.