1. Brawer, S. Relaxation in Viscous Liquids and Glasses (American Ceramic Society, Columbus, Ohio, 1985).
2. Angell, C. A., Cheeseman, P. & Tamaddon, S. Bull. Mineral. 106, 87–97 (1983).
3. Woodcock, L. V., Angell, C. A. & Cheeseman, P. J. chem. Phys. 65, 1565–1577 (1976).
4. Soules, T. F. J. chem. Phys. 71, 4570–4578 (1979).
5. Kubicki, J. D. & Lasaga, A. C. Am. Mineral. 73, 941–955 (1988).