@inproceedings{inproceedings317ac5ac,
title   = {Thermal activation of Brazilian nickel, iron-smectitic clays},
author = {Vieira Coelho, A. C. and Poncelet, Georges and Ladrière, Jean},
year = {1998},
publisher = {Centro de Tecnologia de Recursos Minerales y Ceramica},
booktitle   = {International Workshop of Activated Clays}
}