Khorоshun V. V. On the theory of generalized Legendre polynomials . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 23, n. 6, p. 837–839, 1971. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8637. Acesso em: 6 dec. 2025.