1. Radiometric age measurements on rocks from southern Africa to the end of 1971;Burger;Geol. Surv. S. Afr., Bull.,1973
2. Age determinations — April 1972 to March 1974;Burger;Ann. Geol. Surv. S. Afr.,1975
3. Zircon U-Pb ages of the Fransfontein granitic suite, northern South West Africa;Burger;Precambrian Res.,1976
4. The Geochronology and Evolution of Africa;Cahen,1984
5. Geologia de Angola. Geol. map, 1:1 000 000;Carvalho,1983