1. P W Anderson, in Ill-Condensed Matter edited by R Balian, R Maynard and G Toulouse (Northe Holland, Amsterdam, 1979)
2. For example, see C A Angell, Science 267, 1924 (1995)
3. See for example. A P Yong (ed.) Spin Glasses and Random Fields (World Scientific, Singapore, 1998)
4. S Sastry, P G Debenedetti and F H Stillinger, Nature 393, 554 (1998)
5. For a review, see M Mezard, G Parisi and M A Virasaro, Spin Glass Theory and Beyond (World Scientific, Singapore, 1987)