1. The Income-elasticity of Demand for Primary Energy;O'Neill,1975
2. Energy and the UK Economy;Bossanyi,1978
3. P. Harris, unpublished results, Energy Technology Support Unit, Harwell, UK, 1977.
4. Energy Analysis of the ‘Report on the Census of Production, 1968’;Casper,1974
5. The natural resource requirements of commodities;Wright,1974