1. A. Kitai, Luminescent Materials and Applications (Wiley, Chichester, 2008), p. 212.
2. S. Nakamura and G. Fasol, The Blue Laser Diodes (Springer, Berlin, 1997), pp. 216–219.
3. N. T. Gurin, K. V. Paksyutov, M. A. Terent’ev, and A. V. Shirokov, Pis’ma Zh. Tekh. Fiz. 35(15), 41 (2009) [Tech. Phys. Lett. 35, 705 (2009)].
4. N. T. Gurin, K. V. Paksyutov, M. A. Terent’ev, and A. V. Shirokov, Pis’ma Zh. Tekh. Fiz. 34(21), 1 (2008) [Tech. Phys. Lett. 34, 905 (2008)].
5. V. V. Meshkov and A. B. Matveev, Principles of Lighting Techniques: A Textbook (Energoatomizdat, Moscow, 1989), p. 432 [in Russian].