“Synthesis and Characterization of N, N′-Bis (isatin) Diamino Zirconium (IV) Complexes”. Bangladesh Journal of Scientific and Industrial Research 54, no. 4 (December 30, 2019): 297–306. Accessed July 4, 2026. https://www.banglajol.info/index.php/BJSIR/article/view/44564.