Aslanova, N. M. and Bairamogly, M. (2010) “Distribution of eigenvalues and trace formula for the Sturm–Liouville operator equation”, Ukrains’kyi Matematychnyi Zhurnal, 62(7), pp. 867–877. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2920 (Accessed: 28April2024).