3Kraft J, Kraft A. On the relationship between energy and GNP[J]. Journal of Energy Development, 1978(3): 401-403.
4Yu E S H, Choi J Y. The causal relationship between electricity and GNP: an international comparison[J]. Journal of Energy and Development, 1985(10): 249-272.
5Glasure Y U, Lee A R. Cointegration, error-correction, and the relationship between GDP and electricity: the case of South Korea and Singapore[J]. Resource and ElectricityEconomics, 1997(20): 17-25.
6John A A. The relationship between energy consump- tion prices and economic growth: time series evidence from Asian developing country[J]. Energy Economics, 2000(22): 615-625.