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2. Rock Fracture Mechanics-Principles, Design and Application;Whittaker,1992
3. The CCNBD test for cutting performance prediction;Fowell,1992
4. Fowell R.J. and Xu C. 34th U.S. Rock Mechanics Symp., University of Wisconsin Madison (Haimson, Ed.), pp. 657–660.
5. Fracture of discs containing cracks