1. Geological studies on the upper cretaceous-eocene sediments in Gebel Abu Had (Wadi Qena);Abd El Razik;Bull. Fac. Sci. Cairo Univ.,1969
2. Zonal stratigraphy of the kharga Oasis. Egypt;Awad;Geol.Surv. Egypt,1965
3. Comparative studies on the Upper Creataceous-Early Paleogene sediments on the Red Sea Coast, Nile Valley and Western Desert, Egypt;Abd El Razik;Proceedings of the 8th Arab Petroleum Congrress. Algiers,1972
4. Some peculiarities in the development of planktonic Foraminifera and the zonation of the low Paleogene of the northern Caucasus (in Russian);Alimarina;Voprosy Mikropaleontol,1963
5. Paleocene/Eocene boundaries sections in Egypt;Aubry,1999