1. Affholter, K.A., Lambert, E.E., 1982. Newly described occurrences of orbicular rock in Precambrian granite, Sandia and Zuni mountains, New Mexico. In: New Mexico Geological Society Guidebook, 33rd Field Conference, Albuquerque Country II, pp. 225–232.
2. The geology and geochemistry of the Archaean granites and gneisses of the Johannesburg–Pretoria Dome;Anhaeusser,1973
3. Geological and geochemical investigations of the Roodekrans ultramafic complex and surrounding Archaean volcanic rocks, Krugersdorp District;Anhaeusser;Trans. Geol. Soc. S. Afr.,1977
4. The geology and geochemistry of the Muldersdrif Ultramafic Complex, Krugersdorp District;Anhaeusser;Trans. Geol. Soc. S. Afr.,1978