Two New Summation Formulae Resembling Contiguous Relation. Global Journal of Science Frontier Research, [S. l.], v. 20, n. F1, p. 37–60, 2020. Disponível em: https://testing.journalofscience.org/index.php/GJSFR/article/view/101565. Acesso em: 4 feb. 2026.