1. Optical Properties of Ions in Crystals;Crosswhite,1967
2. Spectra and Energy Levels of Rare Earth Ions in Crystals;Dieke,1968
3. Luminescence of Inorganic Solids;Garlick,1966
4. Geochemistry;Goldschmidt,1958
5. Cathodoluminescence of Ce3+ and Eu2+—activated alkaline earth feldspars;Laud;J. Electrochem. Soc., Solid State Sci.,1971