1. Bartlett, P.J., 1994. Geology of the Premier Diamond Pipe. In: Anhaeusser, C.R., (Ed.), XVth CMMI Congress, S. Afr., Instn. Mining Metall., Johannesburg, South Africa, vol. 3, pp. 201–213.
2. Hydro-isostatic deflection and tectonic tilting in the central Andes: initial results of a GPS survey of Lake Minchin shorelines;Bills;Geophys. Res. Lett.,1994
3. The petrography of the Bushveld Complex intersected by boreholes in the Bethal area;Buchanan;Trans. Geol. Soc. S. Afr.,1975
4. The seismic revolution in gold and platinum prospecting;Campbell;S. Afr. Geophys. Assoc. Yrbk,1990
5. The vanadiferous magnetite deposits of the Bushveld Complex;Cawthorn,1986