JEEVA ,J., and RAMACHANDRAMOORTHY, T. “PREPARATION, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITIES OF SOME TRANSITION METAL COMPLEXES WITH 4-HYDROXYPYRIDINE AND NITRITE ION”. International Journal of Pharma and Bio Sciences, vol. 4, no. 4, Dec. 2013, pp. 1327-35, https://ijpbs.net/index.php/journal/article/view/2999.