ZAGORODNYUK, S. M. On the orthogonality of partial sums of the generalized hypergeometric series. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 74, n. 1, p. 36–44, 2022. DOI: 10.37863/umzh.v74i1.6989. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6989. Acesso em: 5 dec. 2025.