Nirmala , O., Y. Bhargavi, P. Sreedhara Reddy, and V. Diwakar Reddy. “Synthesis of Hexagonal YMnO3 Nanoparticles by Sol-Gel Route and Their Characterization”. Manufacturing Technology Today, vol. 17, no. 9, Sept. 2018, pp. 32-37, https://mtt.cmti.res.in/index.php/journal/article/view/294.