Kirdsiri, K., L. Shamshad, N. Srisittipokakun, G. Rooh, and J. Kaewkhao. 2016. “Study of the physical and optical properties of Holmium Ion doped soda lime silicate glasses”. Interdisciplinary Research Review 11 (3):32-38. https://doi.org/10.14456/jtir.2016.7.