1. Abramowitz, M.; Stegun, I. A. Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables. Nat. Bur. Standards Appl. Math. Series 55; US Government Printing Office: Washington, DC, 1964.
2. Algorithm 644: A Portable Package for Bessel Functions of a Complex Argument and Nonnegative Order;Amos;ACM Trans. Math. Softw.,1986
3. A Remark on Algorithm 644: “A Portable Package for Bessel Functions of a Complex Argument and Nonnegative Order”;Amos;ACM Trans. Math. Softw.,1995
4. Padé Approximants;Baker,1996
5. Barnett, M. P. Some elementary two-center integrals over Slater orbitals, 1998. Preprint. Available at http://www.princeton.edu/~allengrp/ms/other/ajcat.pdf.