@ARTICLE{
author={Siqueira JRR,Simoes AZ,Stojanovic Biljana D,Paiva-Santos CO,Santos LPS,Longo E,Varela JA},
year={2007},
title={Influence of milling time on mechanically assisted synthesis of Pb0.91Ca0.1TiO3 powders},
journal={CERAMICS INTERNATIONAL},
volume={33},
number={6},
pages={937-941},
document_type={Article},
} 

@ARTICLE{
author={Brankovic Goran O,Brankovic Zorica M,Santos LPS,Longo Elson,Davolos MR,Varela Jose Arana},
year={2003},
title={Spectroscopic studies of SnO2 doped with Cr, Co or Nb},
journal={ADVANCED POWDER TECHNOLOGY III},
volume={416-4},
number={},
pages={651-655},
document_type={Article},
}