AllahverdievBilender P., Hüseyin Tuna, and IsayevHamlet A. 2024. “The Resolvent of Impulsive Singular Hahn-Sturm-Liouville Operators”. Annales Mathematicae Silesianae, January. https://journals.us.edu.pl/index.php/AMSIL/article/view/16779.