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2. 2. IA.H. Ismail , 1991 , "OPEC Production Capacity: The Need for Expansion ", OPEC Review, Autumn.
3. 3. IA.H. Ismail , 1992 , "Future Role of Oil and Natural Gas in OPEC and Non-OPEC Regions Up To and Beyond the Year 2000 ", OPEC Review, Autumn.
4. 4. lA.H. Ismail , 1993 , "Future Growth in OPEC Oil Production Capacity and the Impact of Environmental Measures ", Sixth Meeting of The International Energy Workshop, IIASA, Vienna, Austria, 22-24 June.
5. 5. IA.H. Ismail , 1994 , "Untapped Reserves, World Demand Spur Production Expansion ", Oil and Gas Journal, 2 May.