1. Extraction of light lanthanide nitrates by tri-n-butyl phosphate;Bednarczyk;Solvent Extr. Ion Exch.,1989
2. Extraction of tervalent lanthanides with acidic organophosphoric compounds;Motomizu;Solvent Extr. Ion Exch.,1985
3. Solvent extraction processes for the separation of the rare-earth metals;Preston,1992
4. Solvent extraction of rare-earth metals by carboxylic acids;Du Preez,1992
5. Extraction of Sc, Y, and lanthanoids by quaternary ammonium salts;Gorski,1992