Brooks K., Scholz C.A, King J.W, Peck J., Overpeck J.T, Russell J.M, Amoako P.YO.  2005.  Late-Quaternary lowstands of lake Bosumtwi, Ghana: evidence from high-resolution seismic-reflection and sediment-core data. Palaeogeography Palaeoclimatology Palaeoecology. 216(3-4):235-249.