M. J. MIAH, M. ISLAM, S. PAL, and T. BARMA, “?PREPARATION AND CHARACTERISATION OF MIXED LIGAND COMPLEXES OF Co(III), Fe(III), and Cr(III) CONTAINING PHTHALIMIDE AND PHENOLS”, Pakistan Journal of Scientific & Industrial Research, vol. 39, no. 5-8, pp. 106–109, Aug. 1996.