@ARTICLE{
author={Stefanovic Ilija M,Berndt J,Maric Dragana G,Samara Vladimir,Radmilovic-Radjenovic Marija D,Petrovic Zoran Lj,Kovacevic Eva,Winter Joerg},
year={2006},
title={Secondary electron emission of carbonaceous dust particles},
journal={PHYSICAL REVIEW E},
volume={74},
number={2},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Nikitovic Zeljka D,Strinic Aleksandra I,Samara Vladimir,Malovic Gordana N,Petrovic Zoran Lj},
year={2005},
title={Emission coefficients in helium},
journal={ACTA CHIMICA SLOVENICA},
volume={52},
number={4},
pages={463-466},
document_type={Article},
}