1. Dewey, J. F., and Burke, K. C. A., J. Geol., 81, 683–692 (1973).
2. Watson, J. V., Phil. Trans. R. Soc., A 273, 443–455 (1973).
3. Kroner, A., Phil. Trans. R. Soc., A 280, 541–554 (1976).
4. Shackleton, R. M., in Implications of Continental Drift to the Earth Sciences, 2 (edit. by Tarling, D. H., and Runcorn, S. K.), 1091–1095 (Academic, London, 1973).
5. Piper, J. D. A., in Implications of Continental Drift to the Earth Sciences, 1 (edit. by Tarling, D. H., and Runcorn, S. K.), 19–31 (Academic, London, 1973).