Rema, K.P., et al. “Physico-Chemical Investigations on the Complexes of Mn(II), Fe(II), Ni(II), Cu(II) and Cd(II) With N-(5-Bromosalicylidene)-5-Bromoanthranilic Acid ”. Asian Journal of Chemistry, vol. 4, no. 1, Mar. 2010, pp. 71-76, https://asianpubs.org/index.php/ajchem/article/view/25004.