Japar, Narjes Abd Al_rhman, and Y. E. Rashed. “The Relationships Between Supermassive Black Holes and Star Formation Rate in Active Galaxies Using Optical Spectra Variability”. Iraqi Journal of Science 66, no. 4 (April 30, 2025): 1692–1708. Accessed December 17, 2025. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12250.