1. Bieniawski Z. T.,Deformational Behaviour of Fractured Rock under Multiaxial Compression, Proc. Structures, Solid Mechanics and Engineering Design, Southampton 1969, Ed. M. Te'Eni, Wiley Intersciences, Part. 1, 589–598.
2. Edmond J. M., Paterson M. S.,Volume Changes during Deformation of Rocks at High Pressures, Int. Jour. Rock Mech. Min. Sci., Vol. 9, 1972, 161–182.
3. Hardy M. P., Hudson J. A. andFairhurst C.,The Failure of Rock Beams. Int. J. Rock Mech. Min. Sci. Part I and II, Vol. 10, 1973, 53–67, 69–82.
4. Karsan D., Jirsa J. O.,Behaviour of Concrete under Compressive Loadings, Proc. ASCE, 95, ST. 42, Dec. 1969, 2543–2561.
5. Hueckel T., Drescher A.,On Dilatational Effects of Inelastic Granular Media, Archives of Mechanics, 27, 1, 157–172, 1975.