1. Planktonic Foraminifera of Mokattam Formation (Eocene) of Gebel Mokattam, Cairo, Egypt;Abdel-Kireem;Revue Micropaléont.,1985
2. Lexique stratigraphique international (Afrique);Awad;Cong. géol. intern., Com. d. stratig.,1966
3. Calcareous Nannofossil Biostratigraphy of Middle and Upper Eocene Deposits at Gebel Mokattam, Eastern Cairo, Egypt;Bassiouni,1986
4. On the occurrence of Nummulites ptukhiani Kacharava at the base of Maadi Formation (Biarritzian), Gebel Mokattam, Wast of Cairo, Egypt;Bassiouni,1986
5. The Topography and Geology of the Fayoum Province, Egypt;Beadnell,1905