@article{article9e012268,
title   = {South america: a reservoir of continental carbon; first estimate of changes since 18,000 yr bp},
author = {Coltrinari, L.},
year = {1991},
doi = {10.11606/issn.2317-8078.v0i8p25-33},
journal   = {Boletim IG-USP. Publicação Especial}
}