Unosi

• Long-term variability of the optical spectra of NGC 4151. I. Light curves and flux correlations (2008-07)

  A. Shapovalova, L. Popović, S. Collin, A. Burenkov, V. Chavushyan, N. Bochkarev, E. Benitez, D. Dultzin, A. Kovačević, N. Borisov, L. Carrasco, J. Leon-Tavares, A. Mercado, J. Valdes, V. Vlasuyk, V. Zhdanova, Long-term variability of the optical spectra of NGC 4151. I. Light curves and flux correlations, ASTRONOMY AND ASTROPHYSICS, Vol. 486, No. 1, pp. 99 - 111, Jul, 2008

• Spectral optical monitoring of 3C 390.3 in 1995-2007. I. Light curves and flux variation in the continuum and broad lines (2010-07)

  A. Shapovalova, L. Popović, A. Burenkov, V. Chavushyan, D. Ilić, W. Kollatschny, A. Kovačević, N. Bochkarev, L. Carrasco, J. Leon-Tavares, A. Mercado, J. Valdes, V. Vlasuyk, E. de la Fuente, Spectral optical monitoring of 3C 390.3 in 1995-2007. I. Light curves and flux variation in the continuum and broad lines, ASTRONOMY AND ASTROPHYSICS, Vol. 517, pp. 1 - 27, Jul, 2010

• Spectral Optical Monitoring of the Narrow-line Seyfert 1 Galaxy Ark 564 (2012-09)

  A. Shapovalova, L. Popović, A. Burenkov, V. Chavushyan, D. Ilić, A. Kovačević, W. Kollatschny, J. Kovačević, N. Bochkarev, J. Valdes, J. Torrealba, J. Leon-Tavares, A. Mercado, E. Benitez, L. Carrasco, D. Dultzin, E. de la Fuente, Spectral Optical Monitoring of the Narrow-line Seyfert 1 Galaxy Ark 564, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, Vol. 202, No. 1, pp. 1 - 22, Sep, 2012

• Spectral optical monitoring of a double-peaked emission line AGN Arp 102B. Variability of spectral lines and continuum (2013-11)

  A. Shapovalova, L. Popović, A. Burenkov, V. Chavushyan, D. Ilić, W. Kollatschny, A. Kovačević, N. Bochkarev, J. Valdes, J. Torrealba, V. Patino-Alvarez, J. Leon-Tavares, E. Benitez, L. Carrasco, D. Dultzin, A. Mercado, V. Zhdanova, Spectral optical monitoring of a double-peaked emission line AGN Arp 102B. Variability of spectral lines and continuum, ASTRONOMY AND ASTROPHYSICS, Vol. 559, pp. 1 - 17, Nov, 2013

• Spectral optical monitoring of the double-peaked emission line AGN Arp 102B. II. Variability of the broad line properties (2014-12)

  L. Popović, A. Shapovalova, D. Ilić, A. Burenkov, V. Chavushyan, W. Kollatschny, A. Kovačević, J. Valdes, J. Leon-Tavares, N. Bochkarev, V. Patino-Alvarez, J. Torrealba, Spectral optical monitoring of the double-peaked emission line AGN Arp 102B. II. Variability of the broad line properties, ASTRONOMY AND ASTROPHYSICS, Vol. 572, pp. 1 - 17, Dec, 2014

• First Long-term Optical Spectral Monitoring of a Binary Black Hole Candidate E1821+643. I. Variability of Spectral Lines and Continuum (2016-02)

  A. Shapovalova, L. Popović, V. Chavushyan, A. Burenkov, D. Ilić, W. Kollatschny, A. Kovačević, J. Valdes, V. Patino-Alvarez, J. Leon-Tavares, J. Torrealba, V. Zhdanova, 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, No. 2, pp. 1 - 18, Feb, 2016

• Evidence for Periodicity in 43 year-long Monitoring of NGC 5548 (2016-08)

  E. Bon, S. Zucker, H. Netzer, P. Marziani, P. Jovanović, A. Shapovalova, S. Komossa, C. Gaskell, L. Popović, S. Britzen, V. Chavushyan, A. Burenkov, S. Sergeev, G. La Mura, J. Valdes, M. Stalevski, Evidence for Periodicity in 43 year-long Monitoring of NGC 5548, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, Vol. 225, No. 2, pp. 1 - 15, Aug, 2016

• Long-term optical spectral monitoring of NGC 7469 (2017-04)

  A. Shapovalova, L. Popović, V. Chavushyan, V. Afanasiev, D. Ilić, A. Kovačević, A. Burenkov, W. Kollatschny, O. Spiridonova, J. Valdes, N. Bochkarev, V. Patino-Alvarez, L. Carrasco, V. Zhdanova, Long-term optical spectral monitoring of NGC 7469, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol. 466, No. 4, pp. 4759 - 4775, Apr, 2017