1. Bai J, Jakeman AJ, McAleer M (1991) A new approach to maximum likelihood estimation of the three-parameter gamma and Weibull distributions. Aust J Stat 33:397–410
2. Bingham C (1964) Distributions on the sphere and on the projective plane. PhD thesis, Yale University, New Haven, CT
3. Chen JP, Xiao SF, Wang Q (1995) Three dimensional network modeling of stochastic fractures. Northeast Normal University Press, Changchun
4. Chen JP, Wang Q, Zhao HL (2004) Obtaining RQD of rock mass by sampling window method. Chin J Rock Mech Eng 23:1491–1495
5. Chen MX, Chen BG, Shen SH (2013) Application of drilling deviation correcting and deflecting techniques in geological exploration at Songta Hydropower Station. Rock Soil Drill Tunn 40:35–38