SHOMSHEKOVA, S.; DENISSYUK, E.; VALIULLIN, R.; KUSAKIN, A.; REVA, I.; KRUGOV, M. PHOTOMETRIC AND SPECTRAL RESEARCHES OF THE SEYFERT GALAXIES NGC 4151 AND NGC 7469. Известия НАН РК. Серия физико-математическая, [S. l.], n. 4, p. 127–134, 2020. Disponível em: http://91834.libg.asia/physics-mathematics/article/view/552. Acesso em: 22 фев. 2025.