Kujau, A, Nürnberg, D, Zielhofer, C, Bahr, A and Röhl, U (2010) Mississippi River discharge over the last ~560,000 years - Indications from X-ray fluorescence core-scanning. Palaeogeography, Palaeoclimatology, Palaeoecology, 298. 311-318. doi:10.1016/j.palaeo.2010.10.005