1. Rocks from the rivers: a report on gravel extraction in New Zealand’s lower North Island rivers;Anon;Soil and Water,1987
2. Arnould, M., 1997. Alkali-reaction with silica alkaline aggregates result of recent researches in France, Proceedings’97 International Three Gorges project Technical Seminar, Yichang, China, 26-28 November. Chinesee committee on Large Dams, China, 21, 184-195.
3. The shear strength of rock joints in theory and practice. Rock mechanics and rock engineering;Barton;J. Eng. Geol.,1977
4. Engineering Geology;Bell,1998
5. Non destructive methods for investigation of some mechanical properties of natural stones in the protection of monuments;Christaras;Bull. Int. Assoc. Eng. Geol.,1996