1. The structure of the Bushveld Complex south of Potgietersrus as revealed by gravity survey;Barrett;Trans. Geol. Soc. S. Afr.,1978
2. The Transvaal Sequence in Griqualand West;Beukes,1986
3. Boardman, L.G., (1948). The geology of iron ore and other minerals of the Thabazimbi area, Unpublished Ph.D. thesis, Pretoria University.
4. Age determinations – April 1972 to March 1974;Burger;Ann. Geol. Surv. S. Afr.,1973
5. The Waterberg “basin” – a reappraisal;Cheney;Trans. Geol. Soc. S. Afr.,1986