Thomas, Jeena, Ajith Verughese George, Tiju J. Mathew, and Vinoy Thomas. “Fluorescence Studies of Dy3+ Ions in Silica Sol Gel”. Asian Journal of Chemistry 27, no. 5 (February 20, 2015): 1626–1630. Accessed July 18, 2024. https://asianpubs.org/index.php/ajchem/article/view/27_5_12.