Huynh, Thanh, and Van Tran. 2017. “Synthesis of SiO2-TiO2:Yb3+ Glass-Ceramics and Characterization of Structure and Optical Properties”. Science & Technology Development Journal: Natural Sciences 1 (T1), 114-21. https://doi.org/https://doi.org/10.32508/stdjns.v1iT1.440.