SINHA, R.; CHAKRABORTY, B. The Sum of Even Powers. Ohio Journal of School Mathematics, [S. l.], v. 93, n. 1, p. 72–73, 2023. Disponível em: https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/OJSM/article/view/9329. Acesso em: 29 apr. 2026.