1. 2Charles Palache, Harry Berman, and Frondel Clifford , Dana's System of Mineralogy , Vol. I , 7th ed. , pp.718 -22 . John Wiley & Sons, Inc., New York, 1944 . 718 pp.Ceram. Abstr., 1944 , p.718 .
2. Growth of Beryllia Single Crystals
3. Growth of Beryl Single Crystals for Microwave Applications