1. Smil, V., China's Energetics: A System Analysis, Energy in the Developing World. Oxford University Press, Oxford, 1980, p. 113.
2. Smil, V. and Knowland, W. E., p.1 in Ref.[1].
3. Rahman, M. A. and Huq, A. M. Z., p. 320 in Ref. [1].
4. Brisco, J. and Bari, A., The political economy of energy in rural Bangladesh: a view from a village. Division of Applied Science, Harvard University, Cambridge, MA, 1979.
5. Friedlander, G. D., IEEE Spectrum, 1973, 18.