ASSANOVA, A. T.; BAKIROVA, E. A.; KADIRBAYEVA, Zh. M. On the unique solvability of a nonlocal boundary-value problem for systems of loaded hyperbolic equations with impulsive actions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 69, n. 8, p. 1011–1029, 2017. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1755. Acesso em: 5 dec. 2025.