1. M. Al-Sabban , "The impact of response measures by industrialized countries on the world economy" . A paper presented at the OPEC Seminar on the Environment, Vienna, 1992 .
2. Basic Oil Laws and Concession Contracts , Supplement, XL , (40) , South America, The Barrows Company, 1975 .
3. J. M. Burniaux, J. P. Martin, G. Nicoletti, and J. Martins , "The costs of policies to reduce global emissions of CO2: initial simulation results with Green" . Working paper no. 103, OECD, Paris, 1991 .
4. Economist Intelligence Unit , "Gabon to 1995 ". Special Report No. 2021.
5. International Petroleum Finance , page8 , 1991 .