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 (2023) Long-term optical spectral monitoring of a changing-look active galactic nucleus NGC 3516 II. Broad-line profile variability, ASTRONOMY & ASTROPHYSICS, vol. 675, br. , str. - (Article) 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 (2019) Long-term optical spectral monitoring of a changing-look active galactic nucleus NGC 3516-I. Continuum and broad-line flux variability, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 485, br. 4, str. 4790-4803 (Article) 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 (2017) Long-term optical spectral monitoring of NGC 7469, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 466, br. 4, str. 4759-4775 (Article) 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 (2016) First Long-Term Optical Spectral Monitoring of a Binary Black Hole Candidate E1821+643. I. Variability of Spectral Lines and Continuum, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, vol. 222, br. 2, str. - (Article) Kovacevic Andjelka B,Popovic Luka C,Shapovalova Alla I,Ilic Dragana J,Burenkov Alexander N,Chavushyan Vahram H (2015) Time Delay Evolution of Five Active Galactic Nuclei, JOURNAL OF ASTROPHYSICS AND ASTRONOMY, vol. 36, br. 4, str. 475-493 (Article) Ilic Dragana J,Popovic Luka C,Shapovalova Alla I,Burenkov Alexander N,Chavushyan Vahram H,Kovacevic Andjelka B (2015) Line Shape Variability in a Sample of AGN with Broad Lines, JOURNAL OF ASTROPHYSICS AND ASTRONOMY, vol. 36, br. 4, str. 433-445 (Article) 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 (2014) Spectral optical monitoring of the double-peaked emission line AGN Arp 102B II. Variability of the broad line properties, ASTRONOMY & ASTROPHYSICS, vol. 572, br. , str. - (Article) Kovacevic Andjelka B,Popovic Luka C,Shapovalova Alla I,Ilic Dragana J,Burenkov Alexander N,Chavushyan Vahram H (2014) Time series analysis of active galactic nuclei: The case of Arp 102B, 3C 390.3, NGC 5548 and NGC 4051, ADVANCES IN SPACE RESEARCH, vol. 54, br. 7, str. 1414-1428 (Article) 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 (2012) Spectral Optical Monitoring of the Narrow-Line Seyfert 1 Galaxy Ark 564, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, vol. 202, br. 1, str. - (Article) Shapovalova Alla I,Popovic Luka C,Ilic Dragana J,Kovacevic Andjelka B,Kovacevic Jelena M,Burenkov Alexander N,Chavushyan Vahram H (2011) Spectral Monitoring of Agn: Preliminary Results for Ark 564 and Arp 102b, BALTIC ASTRONOMY, vol. 20, br. 3, str. 476-480 (Article) 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 (2011) Spectral optical monitoring of 3C 390.3 in 1995-2007 II. Variability of the spectral line parameters, ASTRONOMY & ASTROPHYSICS, vol. 528, br. , str. - (Article) 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 (2010) Spectral optical monitoring of 3C 390.3 in 1995-2007 I. Light curves and flux variation in the continuum and broad lines, ASTRONOMY & ASTROPHYSICS, vol. 517, br. , str. - (Article) Shapovalova Alla I,Popovic Luka C,Burenkov Alexander N,Chavushyan Vahram H,Ilic Dragana J,Kovacevic Andjelka B,Bochkarev Nikolai G,Leon-Tavares J (2010) Long-term variability of the optical spectra of NGC4151 II. Evolution of the broad H alpha and H beta emission-line profiles, ASTRONOMY & ASTROPHYSICS, vol. 509, br. , str. - (Article) 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 (2008) Long-term variability of the optical spectra of NGC 4151 - I. Light curves and flux correlations, ASTRONOMY & ASTROPHYSICS, vol. 486, br. 1, str. 99-U81 (Article) Popovic Luka C,Shapovalova Alla I,Chavushyan Vahram H,Ilic Dragana J,Burenkov Alexander N,Mercado Abelardo,Bochkarev Nikolay G (2008) Probing the physical properties of the NGC 5548 broad line region using balmer lines, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, vol. 60, br. 1, str. 1-9 (Article) Ilic Dragana J,Popovic Luka C,Bon Edi A,Mediavilla EG,Chavushyan Vahram H (2006) Complex emission line region of Mrk 817, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 371, br. 4, str. 1610-1616 (Article)