1. Al-Sadi, H. N. (1980). Seismic exploration, Birkhauser Verlag, Basel.
2. Balch, A. H. and Lee, M. W. (1984). Vertical seismic profiling, International Human Resources Development Corporation, Boston.
3. Bawden, W. F., Hyett, A. J., and Lausch, P. (1992). “An experimental procedure for the in situ testing of cable bolts.” International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Vol. 29, No. 5, pp. 525–533.
4. Hardage, B. A. (1992). Crosswell seismology and reverse VSP, Geophysical Press Ltd., London.
5. Hirata, A., Kokaji, S., Fujita, M., Akamine, A., Fujita, M., and Goto, T. (2003). “Dilation stress in borehole induced by a spiral anchor.” Proceedings of the 3rd International Symposium on Rock Stress, Balkema, Rotterdam, pp. 499–505.