1. Barton, N. R.: A relationship between joint roughness and joint shear strength. Proc. Symp. on Rock Fracture. ISRM, Paper 1?8 (1971).
2. Fecker, E., and N. Rengers: Measurement of large scale roughness of rock planes by means of a profilograph and geological compass. Proc. Symp. on Rock Fracture ISRM Paper 1?18 (1971).
3. Franklin, J. A., E. Broch, and G. Walton: Logging the mechanical character of rock. Trans. Instn. Min. Metall., Sect. A, Vol. 80, pp. A 1-A 9 (1971).
4. Goodman, R. E.: The deformability of joints in ?Determination of the in situ modulus of deformation of rock? ? ASTM STP 477, pp. 174?196 (1970).
5. Goodman, R. E.: The mechanical properties of joints. To be published. Proc. 3rd Congress of ISRM (1974).