1. J. Wong and C. A. Angell, Glass Structure by Spectroscopy (M. Dekker, Inc., New York, 1976) p. 409.
2. G. Fuxi, Optical and Spectroscopic Properties of Glass (Springer-Verlag, Shanghai Scientific Technical Pub., Shanghai, 1991) p. 27.
3. Properties of unconventional lithium bismuthate glasses