1. 1. Fischer and Tropsch carried out their initial research at the Kaiser Wilhelm Institute (today's Max Planck Institute) for Coal Research at Muelheim-Ruhr. On the historical aspects of their research programme, see: R Jr. Anderson , The Fischer-Tropsch Synthesis (Academic Press, 1984 ).
2. 2. PH. Spitz , Petrochemicals-the rise of an industry (John Wiley and Sons, 1988 ), p.38 .
3. 3. M. Grathwohl , World Energy Supply (De Gruyter, 1982 ), p.280 .
4. 4. PH. Spitz , op. cit., p.38 .
5. 5. Martin Quintan , Competition from gas? Petroleum Economist, 1991 , p.12 .