Wang, Fengchao, et al. “Improved Chromaticity and Thermal Stability in White Light Emitting Diode Phosphor BaMgAl10O17: Eu2+, Mn2+”. Asian Journal of Chemistry, vol. 24, no. 11, June 2012, pp. 5352-6, https://asianpubs.org/index.php/ajchem/article/view/9868.