1. The intensity of cleavage as related to the thickness of beds;Bogdonov;Soviet Geol.,1947
2. The Monterey Formation of California and the origin of its siliceous rocks;Bramlette;Prof. Pap. U.S. geol Surv.,1946
3. Presentation of fracture data for rock mechanics;Bridges,1975
4. Characterizing rock joint geometry with joint system models;Dershowitz;Rock Mech. Rock Engng,1988