1. S. Koyama, Y. Miyamoto, A. Fujiwara, H. Kobayashi, K. Ajisawa, H. Komori, Y. Takei, H. Nanto, T. Kurobori, H. Kakimoto, M. Sakakura, Y. Shimotsuma, K. Miura, K. Hirao, T. Yamamoto, Sens. Mater. 22, 377 (2010)
2. M.J. Flynn, E. Samei, Med. Phys. 26, 1612 (1999)
3. N. Hidehito, Sens. Mater. 30, 327 (2018)
4. R.W. Christy, N.M. Johnson, R.R. Wilbarg, J. Appl. Phys. 38, 2099 (1967)
5. T. Yanagida, G. Okada, N. Kawaguchi, J. Lumin. 207, 14 (2019)