1. Shallow marine phosphorites–chert–palygorskite association, Upper Cretaceous Amman Formation, Jordan;Abed;Proceedings of the 29th international geological congress part C,1994
2. Abdel-Rahman, M., 1992. Geochemical, mineralogical and sedimentological studies on phosphorites of the Nile Valley (Duwi Formation) between Qena and Idfu, Egypt. Unpublished PhD thesis, Berlin University, 163 pp.
3. Abd El-Razik, T.M., 1979. Stratigraphical studies on the phosphate deposits between River Nile and Red Sea (South of Latitude 27°N). Cairo University, Faculty of Science Bulletin 42, 299–324.
4. Late Neogene oceanographic changes along Florida's western coast: evidence and mechanisms;Allmon;Journal of Geology,1996
5. Late Cretaceous upwelling system along the southern Tethys margin (Israel): interrelationship between productivity, bottom water preservation;Almogi-Labin;Palaeoceanography,1993