LAU, Y.-K.; TSANG, K.-M. Omega result for the error term in the mean square formula for Dirichlet L-functions. Annales Fennici Mathematici, [S. l.], v. 33, n. 2, p. 549–560, 2008. Disponível em: https://afm.journal.fi/article/view/135246. Acesso em: 18 may. 2024.