ASHIROV , S.; MAMEDOV , Ya. D. On inlegral equation of the Volterra type. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 4, p. 510–515, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9188. Acesso em: 7 dec. 2025.