1. Ab’Saber, A. N., 1977; ‘Espaqos ocupados pela expansdo dos climas secos na America do Sul, por ocasido dos períodos glaciais quaternarios’. Instituto de Geograffa, Universidade de Sao Paulo,Paleoclimas, 3, 1–19.
2. Adamson, D. A., Gasse, F., Street, F. A., Williams, M. A. J., 1980; ‘Late Quaternary history of the Nile’.Nature, 288, 50–55.
3. Agwu, C. O. C., Beug, H. J., 1984: ‘Palynologische Untersuchungen an marinen Sedimenten vor der West-afrikanischen Küste’.Palaeoecology of Africa, 16, 37–52.
4. Allchin, B., Goudie, A., Hegde, K., 1978: ‘The prehistory and paleogeography of the Great Indian Desert’. Academic Press, London, New York, San Francisco, 370 pp.
5. Alyea, F. N., 1972: ‘Numerical simulation of an ice age paleoclimate’. Department of Atmospheric Science, Colorado State University, Atmospheric Science Paper No. 193, 120 pp.