1. Separation of 239U(IV) and 239U(VI) by HPLC;Al Mahamid;Radiochim. Acta,1989
2. Ion chromatographic separation and spectrophotometric separation and spectrophotometric determination of U(IV) and U(VI);de Beer;Radiochim. Acta,1992
3. Determination of U(VI) in presence of anions;Davenport;Analt. Chem.,1949
4. Separation of U(IV) and U(VI) on sulfonated cation-exchange resins containing different amounts of divinylbenzene;Karalova;Zh. Anal. Khim.,1968
5. Lanthanum alkali oxalates;Kolthoff;J. Am. Chem. Soc.,1931