H. Buttrus, N., Y. Dawod, R., & A. Hassan, I. (2006). Synthesis and Characterization of Mn(II), Co(II), Ni(II) and Cu(II) complexes with 4’-azachalcone and their adducts with 1,10-phenanthroline. Journal of Education and Science (JES), 18(3), 1–9. https://doi.org/10.33899/edusj.2006.77526