Amirov RK, Güldü Y, Topsakal N. On impulsive Sturm–Liouville operators with Coulomb potential and spectral parameter linearly contained in boundary conditions. Ukr. Mat. Zhurn. [Internet]. 2010Sep.25 [cited 2024Apr.20];62(9):1155–1172. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2946