S. K. Dawood, سعد, T. Y. Yousif, and ثناء, “Characterization studies on Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes with new ligand`s derived from thiourea”, EDUSJ, vol. 24, no. 1, pp. 22–28, Mar. 2011.