SAPAGOVAS, Mifodijus; PUPALAIGĖ, Kristina; ČIUPAILA, Regimantas; MEŠKAUSKAS, Tadas. On the spectrum structure for one difference eigenvalue problem with nonlocal boundary conditions. Mathematical Modelling and Analysis, [S. l.], v. 28, n. 3, p. 522–541, 2023. DOI: 10.3846/mma.2023.17503. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/17503. Acesso em: 1 jun. 2025.