1. “Methods of Theoretical Physics.”;Morse,1953
2. “Tables of Coulomb Wave Functions,” Vol. 1. Natl. Bur. Standards (U.S.), Appl. Math. Ser. 17(1952). includes a considerable bibliography.
3. A convenient general solution of the confluent hypergeometric equation, analytic and numerical development
4. Regular and Irregular Coulomb Wave Functions Expressed in Terms of Bessel-Clifford Functions
5. F. S. Ham, Cruft Lab., Harvard Univ., Cambridge, Massachusetts, Tech. Rept. No. 204. (1955).