1. Appert O (2008) CTL could provide long-term, transport-fuel supply. SynGas Refiner IV(9):14–18
2. Gray D, White C, Tomlinson G, Ackiewicz M, Schmetz E, Winslow J (2007) Increasing security and reducing carbon emissions of the U.S. transportation sector: a transformational role for coal with biomass. National Energy Technology Laboratory, Pittsburgh, p 61. DOE/NETL-2007/1298
3. De Klerk A (2009) Overview of coal-to liquids technology. In: Klerk D (ed) Beyond Fischer-Tropsch. Elsevier, Amsterdam, p 1. Arno de Klerk comments, “Coal-to-liquids technology started as an ironic twist of fate seen against the present day drive to move towards renewable sources of energy, since coal replaced whales as feed material for the production of lamp oil (kerosene). Coal is not a renewable energy source, except when viewed on a geological time scale, but whales are, yet, the whaling industry came close to making whales a non-renewable resource by converting all whales into oil.” The anecdote illustrates a growing understanding among energy experts, that even with conservation global demand for energy is growing and can best be met by careful use of both renewable and nonrenewable resources. On this point, see also Crane et al
4. Crane H, Kinderman E, Malhotra R (2010) A cubic mile of oil. Oxford University Press, New York
5. Thomson E (2002) The Chinese coal industry: an economic history. Routledge, London