GAO, J.; LIU, He-guo. On the Gauss sums and generalized Bernoulli numbers. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 6, p. 848–854, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2622. Acesso em: 6 dec. 2025.