1. Pantano, C.G., 3rd International Symp. on Halide Glasses, Rennes, France (1985).
2. Fjeldly, LA., Hordvik, A. and Drexhage, M.G., 3rd International Symp. on Halide Glasses, Rennes, France (1985).
3. Robinson, M. and Drexhage, M.G., Mat. Res. Bull. 18, 1101 (1983).
4. Tregoat, D., Fonteneau, G. and Lucas, J., Mat. Res. Bull. 20, 179 (1985).
5. Tregoat, D., Fonteneau, G. and Lucas, J., Mat. Res. Bull. 20, 57 (1985).