1. Handbook of Mathematical Functions;Abramowitz,1965
2. Asymptotic Methods in Electromagnetics;Bouche,1997
3. Electromagnetic and Acoustic Scattering by Simple Shapes;Bowman,1987
4. Determination of ν-zeros of Hankel functions;Campbell;Comput. Phys. Comm.,1984
5. The zeros of Hankel functions as functions of their order;Cochran;Numer. Math.,1965