Mukhtarov, Oktay Sh., and Kadriye Aydemir. “Oscillation Properties for Non-Classical Sturm-Liouville Problems With Additional Transmission Conditions ”. Mathematical Modelling and Analysis 26, no. 3 (September 9, 2021): 432-443. Accessed January 27, 2022. https://journals.vgtu.lt/index.php/MMA/article/view/13216.