اسامة جاسم زينة. 2011. “Synthesis and Characterization of New Mn(II), Co(II), Ni(II) and Cu(II) Complexes With [α-Methyl-N-(3-Methylidene Indol)-2-Amino Anthraquinone] Ligand”. College of Basic Education Research Journal 10 (4):570-81. https://moss.uomosul.edu.iq/index.php/berj/article/view/39696.