Sahu, K., & Thakur, R. (2010). Binuclear Metal Chelates of 1,2,5,6 Tetra Phyenyl-1,6-Dioxo- 3,4-Diazahexa-2,4-Diene-1,6-Dihydrazone with Ni(II). Co(II), Fe(II) and Cu(II) . Asian Journal of Chemistry, 4(3), 447–451. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/25081