Lakshmana Naik R, P.Justin, Bala Narsaiah T. “Size Controlled Hydrothermal Synthesis and Characterization of Nickel Metavanadate (NiVO3) Nanoparticles”. International Journal of Advanced Science and Technology, Vol. 29, no. 05, May 2020, pp. 10012 -18, http://sersc.org/journals/index.php/IJAST/article/view/19484.