Carbon isotopes in charcoal and soils in studies of paleovegetation and climate changes during the late Pleistocene and the Holocene in the southeast and centerwest regions of Brazil - Gouveia, S. E. M.; Pessenda, Luiz Carlos Ruiz; Aravena, R; Boulet, R; Scheel-Ybert, Rita; Bendassolli, Jose Albertino; Ribeiro, A. S.; Freitas, H. A. (Global and Planetary Change, 2002)