1. On the polymorphism of lithium disilicate;Kalinina;UDC 553.67,1970
2. Strength and microstructure in lithium disilicate glass-ceramics;Borom;J. Am. Ceram. Soc.,1975
3. Glass-ceramic technology;Beall,1983
4. Crystal geometry of some alkali silicates;Donnay;Am. Mineral.,1953
5. Glass Ceramics;McMillan,1979