Errata to “The Dirichlet series of ζ ( s ) ζ α ( s + 1 ) f ( s + 1 ) : On an error term associated with its coefficients” (Acta Arith. 75 (1996), 39-69) U. Balakrishnan, Y.-F. S. Pétermann (1999) Acta Arithmetica
Extremal orders of compositions of certain arithmetical functions. Sándor, József, Tóth, László (2008) Integers