H. Buttrus, N., Y. Dawod, R. and 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), pp. 1–9. doi: 10.33899/edusj.2006.77526.