1. Y-C. Li, Y-H. Chang, B-S. Tsai, Y-C. Chen, Y-F. Lin, J. Alloys Comp., 2006, 416, 199.
2. M. Que, Z. Ci, Y. Wang, G. Zhu, Y. Shi, S. Xin, J. Lumin., 2013, 144, 64.
3. Q. Wang, Z. Mu, S. Zhang, Q. Zhang, D. Zhu, J. Feng, Q. Du, F. Wu, J. Lumin., 2019, 206, 618.
4. M. Liao, Z. Mu, S. Zhang, F. Wu, Z. Nie, Z. Zheng, X. Feng, Q. Zhang, J. Feng, D. Zhu, J. Lumin., 2019, 210, 202.
5. C. C. Lin, R-S. Liu, Introduction to the Basic Properties of Luminescent Materials in Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications, Vol. 1, Ed. R.-S. Liu, Springer, Berlin, Heidelberg, 2017, p. 1; DOI: 10.1007/978-3-662-52771-9.