1. – HandBook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables;Abramowitz,1964
2. – Introduction to analytic number theory;Apostol,1976
3. –On the Hurwitz zeta-function;Berndt;Rocky Mountain J. Math.,1972
4. Multiplicative Number Theory;Davenport,1967
5. –Differences of fractional order;Diaz;Math. Comp.,1974