Allahverdiev BP, Tuna H, Isayev HA. The resolvent of impulsive singular Hahn-Sturm-Liouville operators. Ann. Math. Sil. [Internet]. 2024 Jan. 18 [cited 2025 Jul. 1];. Available from: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/16779