@inproceedings{inproceedingsc8a41118, title = {Ftir and drx study of the chemical evolution of di-trioctahedralsmectites from a lateritic weathering profile (Campo Formoso, Brazil)}, author = {Petit, S and Barbosa, R. and Melfi, Adolpho José and Decarreau, A}, year = {1991}, publisher = {European Clay Groups Association}, booktitle = {Euroclay Conference} }