1. A.E. Bopp (1984 ), Tests for Structural Change in US Oil Consumption, 1967-1982, Energy Economics, October.
2. Energy Modelling Forum (1980 ), Aggregate Elasticity of Energy Demand, Vol. 1. EMF-Report 4.
3. Eurostat, Energy Price Indices, 1960 , Energy Statistics Yearbook, 1981.
4. G. Kouris (1981 ), Elasticities - Science or Fiction? Energy Economics, April.
5. W.D. Nordhaus, and W.D. Nordhaus (1977 ), The Demand for Energy: An International Perspective in: (ed): International Studies of The Demand for Energy, North Holland.