1. RbSr age measurements on total rock and separated mineral fractions from the Old Granite of the central Transvaal;Allsopp;J. Geophys. Res.,1961
2. Age limits to the Witwatersrand Supergroup;Allsopp,1986
3. The evolution of the early Precambrian crust of southern Africa;Anhaeusser;Phil. Trans. R. Soc. London,1973
4. An interpretation of UPb zircon ages for Archaean tonalitic gneisses from the Johannesburg-Pretoria granite dome;Anhaeusser;Trans. Geol. Soc. S. Afr.,1982
5. Geochronological Studies on Archaean and Proterozoic Formations of the Foreland of the Namaqualand Front and Possible Correlates on the Kaapvaal Craton;Armstrong,1987