Climatic changes in the Late Pliocene of northwest Africa from a pollen record on an astronomically tuned timescale.
Reference:
Dupont,L.M. et al. (1999)
Climatic changes in the Late Pliocene of northwest Africa from a pollen record on an astronomically tuned timescale. The Pliocene:Time of Change (American Association of Stratigraphic Palynologists Foundation. J.H.Wrenn,J.-P Suc and S.A.G. Leroy,editors).
P. 145- 161