LIVINSKII, V. O. A remark about orthogonal polynomials. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 4, p. 389–392, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5735. Acesso em: 19 dec. 2025.