@inproceedings{inproceedings381fa32d,
title   = {REE mineralization at Barra do Itapirapua alkaline carbonatitic complex, SP/PR, Brazil},
author = {Lorenzi, Maria de Lourdes Blanc and Kahn, Henrique},
year = {2000},
publisher = {CPRM},
booktitle   = {International Geological Congress}
}