1. Vervalin, Ch. EL: Hydrocarbon Processing, 1982 ,März, S. 15. Where will the oil glut take us?
2. Oil Gas J., 1982 ,vom 25. Oktober, S.77. IEA (International Energy Agency). Current oil supplies masks trouble ahead.
3. Oil Gas J., 1983,10.Oktober, S.71–73. World crude glut hits Middle East hard.
4. Leonard J.P.: Oil Gas J., 1983 ,30.Mai, S.93–97. Prospects for coal-based transportation fuel fading fast.
5. Hydrocarbon Processing 62 (1) 25,1983, Methanols’ future is subject of new marketing analysis.