DOBKEVICH, Maria; SADYRBAEV, Felix. Types and Multiplicity of Solutions to Sturm–Liouville Boundary Value Problem. Mathematical Modelling and Analysis, [S. l.], v. 20, n. 1, p. 1–8, 2015. DOI: 10.3846/13926292.2015.996259. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/981. Acesso em: 1 jun. 2025.