BŪDA, Vytautas; SAPAGOVAS, Mifodijus; ŠTIKONIENĖ, Olga; ŠTIKONAS, Artūras. M-matrices and one-dimensional discrete Sturm–Liouville problems with nonlocal boundary conditions. Nonlinear Analysis: Modelling and Control, [S. l.], v. 30, n. 4, p. 704–731, 2025. DOI: 10.15388/namc.2025.30.42210. Disponível em: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/42210. Acesso em: 5 jul. 2025.