1. GOODMAN R.E. -“The mechanical properties of joints”. Proc. 3rd Cong. Int. Soc. Rock Mech. Denver, (1974): 127–140.
2. GOODMAN R.E. -Methods of Geological Engineering in Discontinuous Rocks. St Paul, U.S.A.; West Publishing, 1976.
3. JAEGER J.C. -“Behaviour of closely jointed Rock”, Proc. 11th Symp. Rock Mech. Berkeley, U.S.A. Port City Press: 1969, Chap. 4.
4. JAEGER J.C. and N.G.W. Cook. - Fundamentals of Rock Mechanics, London: Methuen, 1969.
5. MORLAND L.W. -“Continuum model of regularly jointed mediums” J. Geophys. Res., 79, 2 (1974): 357–362.