England, W. A.; Mackenzie, A. S. Some aspects of the organic geochemistry of petroleum fluids. Geologische Rundschau. 1989, 78: 291. doi:10.1007/BF01988365.
Quigley, T. M.; Mackenzie, A. S. The temperatures of oil and gas formation in the sub-surface. Nature. 1988, 333 (6173): 549. doi:10.1038/333549a0.