ZAGORODNYUK, S. M. Orthogonal polynomials related to some Jacobi-type pencils. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 68, n. 9, p. 1180–1190, 2016. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1913. Acesso em: 5 dec. 2025.