K. Dawood, S. (1970) “Synthesis and Characterization of Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) Complexes with Hexa azamacrocyclic Ligands Derived from Thiosemicarbazide”, Journal of Education and Science (JES), 24(4), pp. 60–67. doi: 10.33899/edusj.1970.58957.