1. Büssersteine – Zeugen vorzeitlicher Grundwasserschwankungen;Ackermann;Zeitschrift für Geomorphologie,1962
2. On the drift in Brazil, and on decomposed rocks under the drift;Agassiz;American Journal of Science and Arts,1865
3. Geographical unity of eastern Australia in late and post Tertiary time;Andrews;Proceedings of the Royal Society of New South Wales,1910
4. The formation of inselberge;Bain;Geological Magazine,1923
5. The geology of Bauchi town and surrounding district;Bain;Geological Survey of Nigeria Bulletin,1926