KHUSANOV, D. Kh. On the Unique Solvability of a Nonautonomous Functional Differential Equation of Neutral Type. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 53, n. 8, p. 1147–1152, 2001. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4332. Acesso em: 6 dec. 2025.