Orbital forcing and the spread of C4 grasses in the late Neogene: stable isotope evidence from South African speleothems Alf G. Latham, Graham P. Weedon, Philip J. Hopley, Jim D. Marshall, Andy I.R. Herries, K.L. Kuykendall • 2007
Uranium-series age determination of travertines from the site of Vértesszöllös, Hungary Alf G. Latham, H.P. Schwarcz • 1984