GARBUZA, Tatjana. Expressions for Fučik spectra for sturm‐liouville BVP. Mathematical Modelling and Analysis, [S. l.], v. 12, n. 1, p. 51–60, 2007. DOI: 10.3846/1392-6292.2007.12.51-60. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/7093. Acesso em: 9 may. 2025.