@ARTICLE{
author={Rakic Nemanja,La Mura Giovanni,Ilic Dragana J,Shapovalova AI,Kollatschny Wolfram,Rafanelli Piero,Popovic Luka C},
year={2017},
title={The intrinsic Baldwin effect in broad Balmer lines of six long-term monitored AGNs},
journal={ASTRONOMY & ASTROPHYSICS},
volume={603},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Bon Edi A,Jovanovic Predrag P,Marziani Paola,Shapovalova AI,Bon Natasa,Borka Jovanovic Vesna V,Borka Dusko V,Sulentic JW,Popovic Luka C},
year={2012},
title={The First Spectroscopically Resolved Sub-Parsec Orbit of a Supermassive Binary Black Hole},
journal={ASTROPHYSICAL JOURNAL},
volume={759},
number={2},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Jovanovic Predrag P,Popovic Luka C,Stalevski Marko,Shapovalova AI},
year={2010},
title={Variability of the H Beta Line Profiles as An Indicator of Orbiting Bright Spots in Accretion Disks of Quasars: a Case Study of 3C 390.3},
journal={ASTROPHYSICAL JOURNAL},
volume={718},
number={1},
pages={168-176},
document_type={Article},
}