VOLCHKOV, V. V. On an equality equivalent to the Riemann hypothesis. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 3, p. 422–423, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5435. Acesso em: 7 apr. 2025.