ALLAHVERDIEV, B.P.; TUNA, H.; ISAYEV, H.A. Titchmarsh-Weyl theory for impulsive Hahn-Dirac systems. Carpathian Mathematical Publications, [S. l.], v. 18, n. 1, p. 278–288, 2026. DOI: 10.15330/cmp.18.1.278-288. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/7207. Acesso em: 14 jul. 2026.