Bingelė K, Štikonas A. Investigation of a discrete Sturm–Liouville problem with two-point nonlocal boundary condition and natural approximation of a derivative in boundary condition. MMA [Internet]. 2024 Mar. 26 [cited 2025 May 10];29(2):309–330. Available from: https://journals.vilniustech.lt/index.php/MMA/article/view/19829