Knox, R W O B, Bosch, J H A, Rasmussen, E S, Heilmann-Clausen, C, Hiss, M, De Lugt, I R, Kasinski, J, King, C, Köthe, A, Slodkowska, B, Standke, G & Vandenberghe, N 2010, Cenozoic . in H Dornenbaal & A Stevenson (eds), Petroleum Geological Atlas of the Southern Permian Basin Area . EAGE Publications b.v., Houten, pp. 211-223 .