1. B. Lawn and R. Wilshaw, Journal of Materials Science 10 (1975) 1049?81.
2. A. Faulkner, Mechanical Principles of Flintworking, Doctoral dissertation, Washington State University (1972).
3. F. von Kerkhof and H. Müller-Beck, Glastechnische Berichte 42 (1969) 439?48.
4. J.G. Fonseca, J.D. Eshelby and C. Atkinson, International Journal of Fracture Mechanics 7 (1971) 435?47.
5. B. Cotterell and J. Kamminga, in Lithic Use-Wear Analysis, B. Hayden, Editor, Academic Press (1979) 97?112.