@article{article0804e790,
title   = {Nature and behaviour of organic matter in soils under natural forest, and after deforestation, burning and cultivation, near Manaus},
author = {Cerri, Carlos Clemente and Volkoff, B and Andreux, F},
year = {1991},
doi = {10.1016/0378-1127(91)90146-m},
journal   = {Forest Ecology and Management}
}