1. C.J. Rodden, editor. Analytical Chemistry of the Manhattan Project, McGraw- HiU Book Co., New York (1950).
2. W. J. Blaedel, Eugene D. Olsen, and R.F. Buchanan, Sequential Ion Exchange Separation Scheme for the Identification of Metallic Radio Elements, Anal. Chem. 32:1866 (1960).
3. S. A. Borovik and N. M. Gudris, Examination of the Extreme Lines of Rhenium in the Presence of Large Quantities of Molybdenum, J. Appl. Chem. U.S.S.R. 9:937 (1936).
4. A. L. Emanuelli, The Behavior of Molybdates and Perrhenates in Ion Exchange Resins, Anal. fac. quim, Y form, Univ. Chile 10:113 (1958).
5. J. P. Faris, Adsorption of the Elements from Hydrofluoric Acid by Anion Exchange, Anal. Chem. 32:520 (1960).