1. Alhajji AF, Huettner D (2000a) The target revenue model and the international oil market: empirical evidence from 1971 to 1994. Energy J 21(2):121–144
2. Alhajji AF, Huettner D (2000b) OPEC and world crude oil markets from 1973 to 1994: cartel, oligopoly, or competitive? Energy J 21(3):31–60
3. Cremer J, Salehi-Isfahani D (1980) A competitive theory of the oil market. What does OPEC really do? Working Paper No. 80–84, University of Pennsylvania
4. Dahl C, Yucel M (1991) Testing alternative hypothesis of oil production behaviour. Energy J 12(4):117–138
5. ESMAP 2005 The impact of higher oil prices on low income countries and on the poor, Energy Sector Management Assistance Programme, World Bank, Washington DC