1. Era, K., Ishii, T., Kuzuba, T., Sato, T., and Iwata, M., Spectroscopic studies of carbon-related defects in hexagonal boron nitride, submitted to Phys. Rev. B, and related papers in preparation.
2. A low frequency raman-active vibration of hexagonal boron nitride;Kuzuba;Solid State Commun.,1978
3. Multiband Luminescence in Boron Nitride;Larach;Phys. Rev.,1956
4. Sato, T., et al., to be published.
5. Theory of the optical properties of imperfections in nonmetals;Dexter,1958