References and Notes for Polonium ( Po )

---

      C66a      G. W. Charles, J. Opt. Soc. Am. 56, 1292 (1966). The adopted value for the Po I ionization energy is intermediate between the two values 67840 and 67885 cm^-1 obtained in this reference.

      CHPT55    G. W. Charles, D. J. Hunt, G. Pish and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955). 

---