@ARTICLE{
author={Sakr GB,Yahia IS,Fadel M,Fouad SS,Romcevic Nebojsa Z},
year={2010},
title={Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films},
journal={JOURNAL OF ALLOYS AND COMPOUNDS},
volume={507},
number={2},
pages={557-562},
document_type={Article},
} 

@ARTICLE{
author={Yahia IS,Saddeek YB,Sakr GB,Knoff W,Story T,Romcevic Nebojsa Z,Dobrowolski WD},
year={2009},
title={Spectroscopic analysis and magnetic susceptibility of CuO-TeO2-V2O5 glasses},
journal={JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS},
volume={321},
number={24},
pages={4039-4044},
document_type={Article},
}