SINGH, R.P., and D. GUPTA. “Trivalent Chromium, Iron and Cobalt Complexes of Hydrozones Derived from 2,6-Diacetyl Pyridine Dihydrazide”. Asian Journal of Chemistry 21, no. 6 (March 30, 2010): 4444–4450. Accessed November 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/18186.