Shomshekova, S., Denissyuk, E., Valiullin, R., Kusakin, A., Reva, I., & Krugov, M. (2020). PHOTOMETRIC AND SPECTRAL RESEARCHES OF THE SEYFERT GALAXIES NGC 4151 AND NGC 7469. Известия НАН РК. Серия физико-математическая, (4), 127–134. извлечено от https://journals.nauka-nanrk.kz/physics-mathematics/article/view/552