@ARTICLE{
author={Popovic Luka C,Ilic Dragana J,Burenkov Alexander N,Alvarez Victor Manuel Patino,Marceta-Mandic Sladjana,Kovacevic-Dojcinovic Jelena M,Shablovinskaya Elena,Kovacevic Andjelka B,Marziani Paola,Chavushyan Vahram H,Wang Jian-Min,Li Yan-Rong,Mediavilla Evencio GG},
year={2023},
title={Long-term optical spectral monitoring of a changing-look active galactic nucleus NGC 3516 II. Broad-line profile variability},
journal={ASTRONOMY & ASTROPHYSICS},
volume={675},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Afanasiev VL,Ilic Dragana J,Kovacevic Andjelka B,Burenkov Alexander N,Chavushyan Vahram H,Marceta-Mandic Sladjana,Spiridonova O,Valdes JR,Bochkarev Nikolai G,Patino-Alvarez V,Carrasco L,Zhdanova VE},
year={2019},
title={Long-term optical spectral monitoring of a changing-look active galactic nucleus NGC 3516-I. Continuum and broad-line flux variability},
journal={MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
volume={485},
number={4},
pages={4790-4803},
document_type={Article},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Chavushyan Vahram H,Afanasiev VL,Ilic Dragana J,Kovacevic Andjelka B,Burenkov Alexander N,Kollatschny Wolfram,Spiridonova O,Valdes JR,Bochkarev Nikolai G,Patino-Alvarez V,Carrasco L,Zhdanova VE},
year={2017},
title={Long-term optical spectral monitoring of NGC 7469},
journal={MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
volume={466},
number={4},
pages={4759-4775},
document_type={Article},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Chavushyan Vahram H,Burenkov Alexander N,Ilic Dragana J,Kollatschny Wolfram,Kovacevic Andjelka B,Valdes JR,Patino-Alvarez V,Leon-Tavares J,Torrealba J,Zhdanova VE},
year={2016},
title={First Long-Term Optical Spectral Monitoring of a Binary Black Hole Candidate E1821+643. I. Variability of Spectral Lines and Continuum},
journal={ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES},
volume={222},
number={2},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Kovacevic Andjelka B,Popovic Luka C,Shapovalova Alla I,Ilic Dragana J,Burenkov Alexander N,Chavushyan Vahram H},
year={2015},
title={Time Delay Evolution of Five Active Galactic Nuclei},
journal={JOURNAL OF ASTROPHYSICS AND ASTRONOMY},
volume={36},
number={4},
pages={475-493},
document_type={Article},
} 

@ARTICLE{
author={Ilic Dragana J,Popovic Luka C,Shapovalova Alla I,Burenkov Alexander N,Chavushyan Vahram H,Kovacevic Andjelka B},
year={2015},
title={Line Shape Variability in a Sample of AGN with Broad Lines},
journal={JOURNAL OF ASTROPHYSICS AND ASTRONOMY},
volume={36},
number={4},
pages={433-445},
document_type={Article},
} 

@ARTICLE{
author={Popovic Luka C,Shapovalova Alla I,Ilic Dragana J,Burenkov Alexander N,Chavushyan Vahram H,Kollatschny Wolfram,Kovacevic Andjelka B,Valdes JR,Leon-Tavares J,Bochkarev Nikolai G,Patino-Alvarez V,Torrealba J},
year={2014},
title={Spectral optical monitoring of the double-peaked emission line AGN Arp 102B II. Variability of the broad line properties},
journal={ASTRONOMY & ASTROPHYSICS},
volume={572},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Kovacevic Andjelka B,Popovic Luka C,Shapovalova Alla I,Ilic Dragana J,Burenkov Alexander N,Chavushyan Vahram H},
year={2014},
title={Time series analysis of active galactic nuclei: The case of Arp 102B, 3C 390.3, NGC 5548 and NGC 4051},
journal={ADVANCES IN SPACE RESEARCH},
volume={54},
number={7},
pages={1414-1428},
document_type={Article},
} 

@ARTICLE{
author={Ilic Dragana J,Popovic Luka C,Shapovalova Alla I,Burenkov Alexander N,Kollatschny Wolfram,Kovacevic Andjelka B,Chavushyan Vahram H,La Mura Giovanni,Rafanelli Piero},
year={2012},
title={Broad emission lines: A tool for studying nuclei of active galaxies},
journal={XXI INTERNATIONAL CONFERENCE ON SPECTRAL LINE SHAPES (ICSLS 2012)},
volume={397},
number={},
pages={-},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H,Ilic Dragana J,Kovacevic Andjelka B,Kollatschny Wolfram,Kovacevic Jelena M,Bochkarev Nikolay G,Valdes JR,Torrealba J,Leon-Tavares J,Mercado Abelardo,Benitez E,Carrasco L,Dultzin D,de la Fuente E},
year={2012},
title={Spectral Optical Monitoring of the Narrow-Line Seyfert 1 Galaxy Ark 564},
journal={ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES},
volume={202},
number={1},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Ilic Dragana J,Kovacevic Andjelka B,Kovacevic Jelena M,Burenkov Alexander N,Chavushyan Vahram H},
year={2011},
title={Spectral Monitoring of Agn: Preliminary Results for Ark 564 and Arp 102b},
journal={BALTIC ASTRONOMY},
volume={20},
number={3},
pages={476-480},
document_type={Article},
} 

@ARTICLE{
author={Popovic Luka C,Shapovalova Alla I,Ilic Dragana J,Kovacevic Andjelka B,Kollatschny Wolfram,Burenkov Alexander N,Chavushyan Vahram H,Bochkarev Nikolai G,Leon-Tavares J},
year={2011},
title={Spectral optical monitoring of 3C 390.3 in 1995-2007 II. Variability of the spectral line parameters},
journal={ASTRONOMY & ASTROPHYSICS},
volume={528},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Ilic Dragana J,Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H,Kovacevic Andjelka B,Bochkarev Nikolai G,Leon-Tavares J},
year={2010},
title={Long-Term Variability of the Broad H alpha and H beta Emission-Line Profiles of NGC 4151},
journal={CO-EVOLUTION OF CENTRAL BLACK HOLES AND GALAXIES},
volume={267},
number={},
pages={400-400},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H,Ilic Dragana J,Kollatschny Wolfram,Kovacevic Andjelka B,Bochkarev Nikolai G,Carrasco L,Leon-Tavares J,Mercado Abelardo,Valdes JR,Vlasuyk VV,De la Fuente E},
year={2010},
title={Spectral optical monitoring of 3C 390.3 in 1995-2007 I. Light curves and flux variation in the continuum and broad lines},
journal={ASTRONOMY & ASTROPHYSICS},
volume={517},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H,Ilic Dragana J,Kovacevic Andjelka B,Bochkarev Nikolai G,Leon-Tavares J},
year={2010},
title={Long-term variability of the optical spectra of NGC4151 II. Evolution of the broad H alpha and H beta emission-line profiles},
journal={ASTRONOMY & ASTROPHYSICS},
volume={509},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Kovacevic Andjelka B,Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H},
year={2009},
title={1d and 2d Reverberation Mapping Applied on the H-beta Line of NGC 4151},
journal={PROCEEDINGS OF THE XV NATIONAL CONFERENCE OF ASTRONOMERS OF SERBIA},
volume={86},
number={},
pages={279-282},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Bochkarev Nikolai G,Burenkov Alexander N,Chavushyan Vahram H,Collin S,Doroshenko VT,Ilic Dragana J,Kovacevic Andjelka B},
year={2009},
title={Long-term variability of the Broad Emission Line profiles in AGN},
journal={NEW ASTRONOMY REVIEWS},
volume={53},
number={7-10},
pages={191-197},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Kovacevic Andjelka B,Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H},
year={2008},
title={The Blr Structure Of Ngc4151-possible Outflow Model},
journal={24TH SUMMER SCHOOL AND INTERNATIONAL SYMPOSIUM ON THE PHYSICS OF IONIZED GASES, CONTRIBUTED PAPERS},
volume={},
number={84},
pages={471-474},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Shapovalova Alla I,Popovic Luka C,Collin S,Burenkov Alexander N,Chavushyan Vahram H,Bochkarev Nikolay G,Benitez E,Dultzin D,Kovacevic Andjelka B,Borisov N,Carrasco L,Leon-Tavares J,Mercado Abelardo,Valdes JR,Vlasuyk VV,Zhdanova VE},
year={2008},
title={Long-term variability of the optical spectra of NGC 4151 - I. Light curves and flux correlations},
journal={ASTRONOMY & ASTROPHYSICS},
volume={486},
number={1},
pages={99-U81},
document_type={Article},
} 

@ARTICLE{
author={Popovic Luka C,Shapovalova Alla I,Chavushyan Vahram H,Ilic Dragana J,Burenkov Alexander N,Mercado Abelardo,Bochkarev Nikolay G},
year={2008},
title={Probing the physical properties of the NGC 5548 broad line region using balmer lines},
journal={PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN},
volume={60},
number={1},
pages={1-9},
document_type={Article},
} 

@ARTICLE{
author={Ilic Dragana J,La Mura Giovanni,Popovic Luka C,Shapovalova Alla I,Ciroi Stefano,Chavushyan Vahram H,Rafanelli Piero,Burenkov Alexander N,Marcado A},
year={2007},
title={Physical properties of the broad-line region},
journal={CENTRAL ENGINE OF ACTIVE GALACTIC NUCLEI},
volume={373},
number={},
pages={405-406},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Kovacevic Andjelka B,Shapovalova Alla I,Popovic Luka C,Bochkarev Nikolai G,Burenkov Alexander N,Chavushyan Vahram H},
year={2007},
title={Time lag between the optical continuum and line variabilities of NGC 4151},
journal={SPECTRAL LINE SHAPES IN ASTROPHYSICS},
volume={938},
number={},
pages={98-103},
document_type={Proceedings Paper},
}