The effect of Late Quaternary climate and pCO2 change on C4 plant abundance in the south-central United States

Koch, P.L., N.S. Diffenbaugh and K.A. Hoppe, The effect of Late Quaternary climate and pCO2 change on C4 plant abundance in the south-central United States, Palaeogeography, Palaeoclimatology, Palaeoecology, 207(3-4), 331-357, 2004.