@article{articlecb49b475,
title   = {Surface segregation in SnO2-Fe2O3 nanopowders and effects in mossbauer spectroscopy},
author = {Castro, Ricardo Hauch Ribeiro de and Hidalgo Falla, Maria del Pilar and Coaquira, José Antonio Huamaní and Bettini, Jefferson and Zanchet, Daniela and Gouvêa, Douglas},
year = {2005},
doi = {10.1002/ejic.200400879},
journal   = {European Journal Inorganic Chemistry}
}