1. M.V. Berry, Riemann’s saddle-point method and the Riemann-Siegel formula, in: The Legacy of Bernhard Riemann After One Hundred and Fifty Years ALM35, Higher Education Press and International Press Beijing–Boston, pp. 69–78.
2. The Riemann-Siegel expansion for the zeta function: High orders and remainders;Berry;Proce.: Math. Phys. Sci.,1995
3. The Riemann zeros and eigenvalue asymptotics;Berry;SIAM Rev.,2001
4. Asymptotic Expansions of Integrals;Bleistein,1977
5. Asymptotic Methods in Analysis. Bibliotheca Mathematica. Vol. 4;de Bruijn,1958