1. Age and degree of metamorphism and time of nappe emplacement along the southern margin of the Damara orogen, Namibia (SW-Africa);Ahrendt;Geologische Rundschau,1978
2. Shortening the odds in exploration;Allsopp;Nuclear Active,1981
3. Pb–Pb dating and Pb isotope geochemistry of Neoproterozoic carbonate rocks from the Sao Francisco basin, Brazil: implications for the mobility of Pb isotopes during tectonism and Metamorphism;Babinski;Chemical Geology,1999
4. Bäumle, R., 2003. Geohydraulic characterisation of fractured rock flow regimes: regional studies in granite (Lindau, Black Forest, Germany) and dolomite (Tsumeb Aquifers, Northern Namibia). Unpublished PhD thesis, University of Karlsruhe.
5. BGR— Bundesanstalt für Geowissenschaften und Rohstoffe, 1997. Hydrogeology and isotope hydrology of the Otavi Mountainland and its surroundings (KARST_01 and KARST_02). vol. D-III: 65 pp.; unpublished BGR file no. 10793/97, BGR archive no. 116049; Windhoek.