1. Limnological studies on the Pretoria Salt Pan, a hypersaline maar lake;Ashton;Hydrobiologica,1983
2. A Geochemical Survey of the Underground Water Supplies of the Union of South Africa;Bond,1946
3. Structural and petrological investigations of the Pretoria Saltpan impact crater and surrounding area;Brandt,1994
4. The geology of the Pretoria Saltpan impact structure and the surrounding area;Brandt;South African Journal Geology,1995
5. Normalisation of oxygen and hydrogen isotope data;Coplen;Chemical Geology (Isotope Geoscience Section),1988