Rai, B.K., et al. “Synthesis and Study of Co(II), Ni(II) and Cu(II) Complexes With Schiff Base Ligands Derived from 3-Amino-2-Phenyl-4(3H)-Quinazoline One”. Asian Journal of Chemistry, vol. 23, no. 10, Aug. 2011, pp. 4638-40, https://asianpubs.org/index.php/ajchem/article/view/10916.