1. Adachi, T., Kimura, M., Nishimura, T., Koya, N. and Kosaka, K. (1997) Trap Door Experiments under Centrifugal Conditions. Proc. Deformation and Progressive Failure in Geomechanics. Nagoya Asoaka et al. (eds.) Pergamon-Elsevier Science, 725-730.
2. Atkinson, B.K. (ed.) (1987) Fracture Mechanics of Rock, Academic Press, London.
3. Best, M.E. and Katsube, T.J. (1995) Shale Permeability and its Significance in Hydrocarbon Exploration. The Leading Edge, March, 165-170.
4. Borchers, J.W. (ed.) (1998) Land Subsidence Case Studies and Current Research. Association of Engineering Geologist, Special Publication No. 8. Proc. the Dr. Joseph F. Poland Symp. on Land Subsidence, Star Publishing.