@inbook{inbook7b8818c9,
title   = {The bauxite of the quadrilátero ferrífero},
author = {Boulangé, Bruno and Carvalho, A. and Varajao, C A C and Varajao, A F},
year = {1997},
publisher = {USP/FAPESP/ORSTOM},
journal   = {Brazilian Bauxites}
}