Jha, P., V. K. Vhandra, and B. P. Chandra. “Luminescence Induced by Elastic Deformation of BaSi2O2N2:Eu Crystals”. Recent Research in Science and Technology, vol. 4, no. 8, Oct. 2012, https://updatepublishing.com/journal/index.php/rrst/article/view/928.