1. H. Morkoc, Handbook of Nitride Semiconductors and Devices (Wiley-VCH, Weinheim, 2008).
2. F. E. Shubert, Light-Emitting Diodes (Cambridge Univ. Press, 2006).
3. Yu. G. Shreter, Yu. T. Rebane, V. A. Zykov, and V.G. Sidorov, Wide-Gap Semiconductors (Nauka, St.-Petersburg, 2001) [in Russian].
4. R. Quay, Gallium Nitride Electronics (Springer, Berlin, Heidelberg, 2008).
5. A. G. Vasil’ev, Yu. V. Kolkovskii, and Yu. A. Kontsevoi, Microwave Wide-Gap Semiconductor Transistors (Tekhnosfera, Moscow, 2011) [in Russian].