Mahendran, N., Jeyakumar, S. J., Jothibas, M., & Muthuvel, A. (2018). Structural, Morphological, Optical and Photoluminescence Properties of Hafnium Oxide Nanoparticles Synthesized by Sol-Gel Method. Asian Journal of Chemistry, 31(2), 453–459. https://doi.org/10.14233/ajchem.2019.21696