1. C.A. Angell, Science 267, 1924–1935 (1995)
2. P.G. Debenedetti, F.H. Stillinger, Nature 410, 259–267 (2001)
3. L. Bertier, G. Biroli, Rev. Mod. Phys. 83, 587–645 (2011)
4. E.R. Andrew, R.G. Eades, Proc. Roy. Soc. London 218A, 537–552 (1953)
5. H. Kawaji, Thesis for the Master’s Degree of Science (in Japanese), Osaka University, Graduate School of Science (1986)