Ayush Khare, D. S. Kshatri, and S. K. Sharma. “Characterization and Optical Properties of Eu and Dy Doped SrAl2O4 Phosphors”. Journal of International Academy of Physical Sciences, vol. 15, no. 6, Oct. 2011, pp. 407-12, https://www.iaps.org.in/journal/index.php/journaliaps/article/view/651.