KIRIYATZKII, Eduard. On linear homogeneous differential equation of Chebyshev type. Lietuvos matematikos rinkinys, [S. l.], v. 48, n. proc. LMS, p. 54–59, 2008. DOI: 10.15388/LMR.2008.09. Disponível em: https://journals.vu.lt./LMR/article/view/18061. Acesso em: 26 apr. 2025.