[1]F. Erdogan, G. Sih, On the crack extension in plates under plane loading and transverse shear, 1963.
[2]M. Hussain, S. Pu, J. Underwood, Strain energy release rate for a crack under combined mode I and mode II, in: Fracture analysis: Proceedings of the 1973 national symposium on fracture mechanics, part II, ASTM International, 1974.
[3]G.C. Sih, Strain-energy-density factor applied to mixed mode crack problems, International Journal of fracture, 10(3) (1974) 305-321.
[4]S.-H. Chang, C.-I. Lee, S. Jeon, Measurement of rock fracture toughness under modes I and II and mixed-mode conditions by using disc-type specimens, Engineering geology, 66(1-2) (2002) 79-97.
[5]R. Schmidt, C. Huddle, Effect of confining pressure on fracture toughness of Indiana limestone, in: International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Elsevier, (1977) 289-293.
[6]A. Abou Sayed, An experimental technique for mneasurig the fracture toughness of rocks under downhole stress condition, 1978.
[7]W. Müller, Brittle crack growth in rocks, pure and applied geophysics, 124(4-5) (1986) 693-709.
[8]N. Al-Shayea, K. Khan, S. Abduljauwad, Effects of confining pressure and temperature on mixed-mode (I–
II) fracture toughness of a limestone rock, International Journal of Rock Mechanics and Mining Sciences, 37(4) (2000) 629-643.
[9]T. Backers, O. Stephansson, E. Rybacki, Rock fracture toughness testing in Mode II—punch-through shear test, International Journal of Rock Mechanics and Mining Sciences, 39(6) (2002) 755-769.
[10]T. Funatsu, M. Seto, H. Shimada, K. Matsui, M. Kuruppu, Combined effects of increasing temperature and confining pressure on the fracture toughness of clay bearing rocks, International Journal of Rock Mechanics and Mining Sciences, 41(6) (2004) 927-938.
[11]H. Wu, J. Kemeny, S. Wu, Experimental and numerical investigation of the punch-through shear test for mode II fracture toughness determination in rock, Engineering Fracture Mechanics, 184 (2017) 59-74.
[12]S.H. Chang, C.I. Lee, S. Jeon, Measurement of rock fracture toughness under modes I and II and mixed-mode conditions by using disc-type specimens, Engineering geology, 66(1-2) (2002) 79-97.
[13]M. Aliha, M. Ayatollahi, Rock fracture toughness study using cracked chevron notched Brazilian disc specimen under pure modes I and II loading–A statistical approach, Theoretical and Applied Fracture Mechanics, 69 (2014) 17-25.
[14]R. Fowell, J. Hudson, C. Xu, X. Zhao, Suggested method for determining mode I fracture toughness using cracked chevron notched Brazilian disc (CCNBD) specimens, in: International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1995.
[15]R. Fowell, C. Xu, P. Dowd, An update on the fracture toughness testing methods related to the cracked chevronnotched Brazilian disk (CCNBD) specimen, pure and applied geophysics, 163(5-6) (2006) 1047-1057.
[16]A.W. Hatheway, The complete ISRM suggested methods for rock characterization, testing and monitoring; 1974– 2006, in, Association of Environmental & Engineering Geologists, 2009.