1. El Sharkawi M, El Aref M, Abdel Mottelib A (1989) Manganese deposits in Carboniferous paleokarst profile, Um Bogma region, west central Sinai, Egypt. Miner Deposita 25:34–43
2. El Sharkawi MA, El Aref MM, Abdel Mottelib A (1990) Syngenetic and Paleokarstic copper mineralization in the Paleozoic platform sediments of west central Sinai, Egypt. Spec Publ Int Ass Sediment 2:159–171
3. El Aassy IE, Ahmed FY, Afifi SY, El Shamy AS (1999) Uranium in laterites, Southwestern Sinai, Egypt. In: First seminar on nuclear raw materials and their technology, Cairo, Egypt, 1–3 Nov 1999, pp 1–20
4. Segev A (1984) Gibbsite mineralization and its genetic implication for the Um Bogma Manganese Deposit, Southwestern Sinai. Miner Deposita 19:54–62
5. Mansour M (1994) Sedimentology and radioactivity of Um Bogma Formation, West Central Sinai, Egypt. MSc thesis, Faculty of Science, Suez Canal University, p 157