1. Brown, D. A., K. S. W. Campbell and K. A. W. Crook (1968). The Geological Evolution of Australia and New Zealand, Pergamon
2. Cahen, L. (1963). Grands traits de l’agencement des éléments du soubassement de l’Afrique centrale. Annls Soc. géol. Belg. 85, 183
3. Cahen, L. and N. J. Snelling (1968). The Geochronology of Equatorial Africa, North-Holland
4. Cahen, L. and J. Lepersonne (1967). The Precambrian of Congo, Rwanda and Burundi, In: The Precambrian, 3, Interscience
5. Campana, B. and R. B. Wilson (1955). Tillites and related glacial topography of South Australia, Eclog. geol Helv., 48, 1