Sung Lim, Chang. “Synthesis and Characterization of Upconversion Photoluminescence Er3+, Yb3+ Co-Doped SrMoO4 Particles via Microwave-Assisted Metathetic Route”. Asian Journal of Chemistry, vol. 24, no. 12, Aug. 2012, pp. 5662-4, https://asianpubs.org/index.php/ajchem/article/view/9947.