B, Blessymol, Yasotha P, Kalaiselvi V, and Gopi S. “Effect of Ethanolamine and HCl on Structural and Optical Properties of Nickel Oxide Thin Films”. Frontiers in Advanced Materials Research 4, no. 1 (April 30, 2022): 1-10. Accessed February 4, 2023. https://sietjournals.com/index.php/famr/article/view/145.