MAKAROV, V. . Higher-order differential equations with polynomial solutions associated with classical orthogonal polynomials . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 7, p. 3–9, 2024. DOI: 10.15407/dopovidi2020.07.003. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/2020-7-1. Acesso em: 2 nov. 2024.