1. Stable isotopes in precipitation;Dansgaard;Tellus,1964
2. New sections in the Varswater Formation (Neogene) of Langebaan Road, Southwestern Cape, South Africa;Dingle;Annals of the South African Museum,1979
3. Flicoteaux R. Lucas J. (1984) in Phosphate Minerals, Weathering of phosphate minerals, eds Nriagu J. O. Moore P. B. (Springer-Verlag), pp 292–317.
4. Geological succession at Langebaanweg, Cape Province, and global events of the Late Tertiary;Hendey;South African Journal of Science,1981
5. The implication of the oxygen isotope records in coexisting cherts and phosphates