@misc{Abrahamyan_H._V._Recent,
 author={Abrahamyan, H. V. and Mickaelian, A. M. and Mikayelyan, G. A. and Paronyan, G. M.},
 howpublished={online},
 abstract={The investigation of the physical properties of Active Galactic Nuclei is one of the most important tasks in astronomy. Until now, the properties of AGN have not been fully studied. Therefore, we have studied a number of important properties of AGN. For example, one of the main properties of AGN is variability. We have studied samples of AGN derived from different methods. For these sources, we have identified some properties of activity in the radio and optical ranges. These properties provide us with insight into active galaxies.},
 title={Recent results of studies of radio galaxies},
 type={Electronic journal},
 keywords={Astrometry, Space Sciences, Archaeoastronomy and Astronomy in Culture},
}