Bingelė, Kristina, Agnė Bankauskienė, and Artūras Štikonas. “Investigation of Spectrum Curves for a Sturm-Liouville Problem With Two-Point Nonlocal Boundary Conditions”. Mathematical Modelling and Analysis 25, no. 1 (January 13, 2020): 53-70. Accessed April 20, 2024. https://journals.vilniustech.lt/index.php/MMA/article/view/10787.