PEČIULYTĖ, S.; ŠTIKONAS, A. Sturm-Liouville Problem for Stationary Differential Operator with Nonlocal Two-Point Boundary Conditions. Nonlinear Analysis: Modelling and Control, [S. l.], v. 11, n. 1, p. 47–78, 2006. DOI: 10.15388/NA.2006.11.1.14764. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/14764.. Acesso em: 5 jul. 2024.