Halder, Kalpataru, and Utpal Saha. “Synthesis and Evaluation of Cr (III), Mn (III) and Fe (III) Schiff Base of Metals Complexes”. Journal of Drug Delivery and Therapeutics, vol. 9, no. 3, May 2019, pp. 114-6, https://doi.org/10.22270/jddt.v9i3.2609.