Albayrak I, Adigüzelov E, Bayramoğlu M. The second regularized trace formula for the Sturm-Liouville problem with spectral parameter in a boundary condition. MFAT. 2000;6(3):1-8. Accessed February 4, 2026. https://zen.imath.kiev.ua/index.php/mfat/article/view/122