1. M. W. Swain, ?Middle crack initiation and propagation beneath a disk glass cutter,?Glass Technol.,22(5). 222?230 (1981).
2. M. V. Swain, ?The deformation associated with the scoring of soda-lime float glass with a disk cutter,?Glass Technol.,21(6), 290?296 (1980).
3. L. A. Shreiner, ?Hardness of Brittle Bodies,?Izv. Akad Nauk SSSR (1949).
4. L. A. Shitova, N. V. Lalykin, and T. A. Kiznetsova. ?The quality of glass edge and its strength,?Steklo Keram., No. 8, 2?3 (1991).
5. E. Dick ?Generation a deep cracks in glass,?Am. Ceram. Soc.,52(6), 338?339 (1969).