Mel'nik, V.I. (1998) “Approximate representation for a natural power of the Riemann ζ-function”, Ukrains’kyi Matematychnyi Zhurnal, 50(4), pp. 540–551. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4924 (Accessed: 5 December 2025).