1. Bieniawski ZT (1967) Mechanism of brittle fracture of rock: part II–experimental studies. Int J Rock Mech Min 4:407–408, IN13–IN14, 409–418, IN15–IN18, 419–423
2. Bobet A, Einstein HH (1998a) Fracture coalescence in rock-type materials under uniaxial and biaxial compression. Int J Rock Mech Min Sci Geomech Abst 35:863–888
3. Bobet A, Einstein HH (1998b) Numerical modeling of fracture coalescence in a model rock material. Int J Fract 92:221–252
4. Brooks Z, Ulm F, Einstein H, Abousleiman Y (2010) A nanomechanical investigation of the crack tip process zone, 44th US rock mechanics symposium and 5th US-Canada rock mechanics symposium, Salt Lake City, Utah, USA, pp 150–157
5. Brooks Z, Ulm F, Einstein H (2012) Role of microstructure size in fracture process zone development of marble, 46th US rock mechanics/geomechanics symposium, Chicago, Illinois, USA, pp 1748–1757