Amirov, R. K., Güldü, Y. and Topsakal, N. (2012) “On impulsive Sturm - Liouville operators with singularity and spectral parameter in boundary conditions”, Ukrains’kyi Matematychnyi Zhurnal, 64(12), pp. 1610-1629. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2686 (Accessed: 29March2024).