1. M.O. Manasreh, I.T. Ferguson, III-Nitride Semiconductor Materials: Growth, Taylor & Francis, New York, 2003, p. 159.
2. H.S. Nalwa, L.S. Rohwer, Handbook of Luminescence, Display Materials, and Devices, Vol. 2, American Scientific Publishers, California, 2003, p. 46.
3. J.I. Pankove, T.D. Moustakas, Gallium Nitride (GaN) I, Academic Press, San Diego, 1998, p. 20.
4. B. Gil, Group III Nitride Semiconductor Compounds, Oxford University Press, New York, 1998, p. 87.
5. J.H. Edgar, S. Strite, I. Akasaki, H. Amano, C. Wetzel, Properties, Processing and Applications of Gallium Nitride and Related Semiconductors, INSPEC, London, 1999, p. 416.