1. Erasmus C.S., Sellschop J.P.F., Watterson J.I.W. (1987). New evidence on the composition of mineral grains of native gold. Nucl. Geophys., Vol.1, No.1, P. 1-23
  2. De Beer J.H., Stettler E.H., Du Plessis J.G., Blume J. (1988). The deep structure of the Barberton greenstone belt . S. Afr. J. Geol., Vol.91, No.2, P. 184-197
  3. Kyte Frank T., Lowe Donald R., Byerly Gary R. (1988). Noble metal abundances in Early Archean spherule layers from South Africa . Meteoritics, Vol.23, No.3, P. 284
  4. Sharpton Virgil L. (1988). Glasses sharpen impact views. Geotimes, Vol.33, No.6, P. 10-11
  5. Lowe Donald R., Byerly Gary R., Asaro Frank, Kyte Frank J. (1989). Geological and geochemical record of 3400-million-year-old terrestrial meteorite impacts. Science, Vol.245, No.4921, P. 959-962
  6. Hart R.J., Andreoli M.A.G., Smith C.B., Otter M.L., Durrheim R. (1990). Ultramafic rocks in the centre of the Vredefort structure (South Africa): Possible exposure of the upper mantle?. Chem. Geol., Vol.83, No.3, P. 233-248
  7. Byerly G.R., Lowe D.R. (1992). Etoxic nickel-chromites in impact spherules from the archean Barderton greenstone belt . and Planet. Sci. Vol. 23. Abstr. Pap. 23rd Lunar and Planet. Sci. Conf., March 16-20, 1992. Pt 1, Houston, P. 193
  8. Lowe Donald R., Byerly Gary R. (1992). Depositional mechanics of impact-produced debris in the archean barberton greenstone belt, south Africa . Lunar and Planet. Sci. Vol. 23. Abstr. Pap. 23rd Lunar and Planet. Sci. Conf., March 16-20, 1992. Pt 2, Houston (Tex.), P. 811
  9. Koeberl Christian, Reimold Wolf Uwe, Boer Rudolf H. (1992). Early archean spherule beds of possible impact origin from Balberton, South Africa: a detailed mineralogical and geochemical study . Pap. Present. Int. Conf. Large Meteorite Impacts and Planet. Evol., Sudbury, Aug. 31 - Sept. 2, 1992 , Houston (Tex.), P. 44
  10. Walsh Maud M. (1992). Microfossils and possible microfossils from the early archean onverwacht group, Barberton Mountain Land, South Africa. Precambrian Res., Vol.54, No.2, P. 271-293
  11. Glikson A.Y. (2005). Geochemical and isotopic signatures of Archaean to Palaeoproterozoic extraterrestrial impact ejecta/fallout units . Austral. J. Earth Sci., Vol.52, No.5, P. 785-798


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