@ARTICLE{
author={Rafanelli Piero,Ciroi Stefano,Cracco V,Di Mille F,Ilic Dragana J,La Mura Giovanni,Popovic Luka C},
year={2014},
title={Are Boltzmann plots of hydrogen Balmer lines a tool for identifying a subclass of S1 AGN?},
journal={ADVANCES IN SPACE RESEARCH},
volume={54},
number={7},
pages={1362-1374},
document_type={Article},
} 

@ARTICLE{
author={La Mura Giovanni,Di Mille F,Ciroi S,Popovic Luka C,Rafanelli Piero},
year={2009},
title={Balmer Emission Line Profiles and Complex Properties of Broad-Line Regions in Active Galactic Nuclei},
journal={ASTROPHYSICAL JOURNAL},
volume={693},
number={2},
pages={1437-1448},
document_type={Article},
}