1. Friedman, M. 1964. Petrofabric techniques for the determination of principal stress directions in rocks. Proc. Conf. State of Stress in the Earth's crust, 1963. Elsevier, New York, 451–550.
2. The resolution of stresses in rock using stereographic projection.;Int. Jnl Rock Mech. & Min. Sci.,1964
3. Hendron, A. J., Cording, E. J. & Aiyer, A. K. 1971. Analytical and graphical methods for the analysis of slopes in rock masses. U.S. Army Engineering Nuclear Cratering Group. Tech. Report No. 36, 168 pp.
4. Heuze, F. E. & Goodman, R. E. 1971. Three-dimensional approach for design of cuts in jointed rock. Proc. 13th Symp. Rock Mech. Urbana, Illinois, in press.
5. Graphical stability analysis of slopes in jointed rock.;J. Soil Mech. Fdns Div. Am. Soc. civ. Engrs,,1968