@ARTICLE{
author={Cvejic Zeljka N,Antic Bratislav V,Kremenovic Aleksandar S,Rakic Srdjan J,Goya Gerardo F,Rechenberg HR,Jovalekic Cedomir D,Spasojevic Vojislav V},
year={2009},
title={Influence of heavy rare earth ions substitution on microstructure and magnetism of nanocrystalline magnetite},
journal={JOURNAL OF ALLOYS AND COMPOUNDS},
volume={472},
number={1-2},
pages={571-575},
document_type={Article},
} 

@ARTICLE{
author={Antic Bratislav V,Goya Gerardo F,Rechenberg HR,Kusigerski Vladan B,Jovic Natasa G,Mitric Miodrag N},
year={2004},
title={Spin glass formation in Li-substituted Co2TiO4 spinel},
journal={JOURNAL OF PHYSICS-CONDENSED MATTER},
volume={16},
number={4},
pages={651-659},
document_type={Article},
}