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year={2011},
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journal={SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY},
volume={82},
number={1},
pages={389-395},
document_type={Article},
} 

@ARTICLE{
author={Matovic Branko Z,Babic Biljana M,Egelja Adela D,Radosavljevic-Mihajlovic Ana S,Logar Vesna P,Saponjic Aleksandra B,Boskovic Snezana B},
year={2009},
title={Preparation of Porous Silica Ceramics Using the Wood Template},
journal={MATERIALS AND MANUFACTURING PROCESSES},
volume={24},
number={10-11},
pages={1109-1113},
document_type={Article},
} 

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author={Kostic-Pulek Aleksandra,Marinkovic Slobodanka R,Logar Vesna P,Tomanec Rudolf A,Popov Svetlana},
year={2000},
title={Production of calcium sulphate alpha-hemihydrate from citrogypsum in unheated sulphuric acid solution},
journal={CERAMICS-SILIKATY},
volume={44},
number={3},
pages={104-108},
document_type={Article},
}