1. Hay, W. W. & Mohler, H. P. Trans. Gulf-Coast Ass. geol. Soc. (eds Hay, W. W. et al.) 17, 426–480 (1967)
2. Volkman, J. K., Eglinton, G., Corner, E. D. S. & Sargent, J. R. in Advances in Organic Geochemistry 1979 (eds Douglas, A. G. & Maxwell, J. R.) 219–227 (Pergamon, Oxford, 30. 1980).
3. Volkman, J.K., Eglinton, G., Corner, E. D. S. & Forsberg, T. E. V. Phytochemistry 19, 2619–2622 (1980).
4. Marlowe, I. T. et al. Br. phycol. J. 19, 203–216 (1984).
5. Marlowe, I. T., Green, J. C., Brassell, S. C., Eglinton, G. & Course, P.A. Phytochemistry (submitted).