1. The carbonate ramp - an alternative to the shelf model;Ahr;Gulf Coast Association Geological Society Transactions,1973
2. Classification and environmental significance of cryptalgal limestones and dolomites, with illustrations from the Cambrian and Ordovician of Southwestern Alberta;Aitken;Journal Sedimentary Petrology,1967
3. Discussion on zircon Pb-evaporation age determinations of the Oak Tree Formation, Chuniespoort Group, Transvaal sequence: implications for the Transvaal-Griqualand West basin correlations;Altermann;South African Journal Geology,1966
4. Sedimentology, geochemistry and palaeogeographic implications of volcanic rocks in the Upper Archaean Campbell Group, western Kaapvaal craton, South Africa;Altermann;Precambrian Research,1996
5. Thrusting, folding, and stratigraphy of the Ghaap Group along the south-western margin of the Kaapvaal Craton;Altermann;South African Journal Geology,1990