Van Zyl, W. H. Chimphango, A. F. A. Den Haan, R. Gorgens, J. F. Chirwa, P. W. C.
(The Royal Society, 2011-02)
The world is currently heavily dependent on oil, especially in the transport sector. However,
rising oil prices, concern about environmental impact and supply instability are among the
factors that have led to greater ...