1. Badgley, P. C. (1965): Structural and tectonic principles. Harper, New York, N. Y.
2. Baecher, G. B., Lanney, N. A. (1978): Trace length biases in joint surveys. Proceedings 19th U. S. Symposium on Rock Mechanics, 56?65.
3. Baecher, G. B., Lanney, N. A., Einstein, H. H. (1977): Statistical description of rock properties and sampling. Proceedings 18th U. S. Symposium on Rock Mechanics, 5C1?8.
4. Bahat, D. (1979): Theoretical considerations on mechanical parameters of joint surfaces based on studies on ceramics. Geol. Mag.,116, 81?92.
5. Bahat, D. (1986): Joints and en echelon cracks in Middle Eocene chalks near Beer Sheva, Israel. J. Struct. Geol.,8, 181?190.