[1] Rijnsdorp J, Jellinek F. J Solid State Chemistry, 1978, 25: 325.
[2] Kikkawa S, et al. J Solid State Chemistry, 1982, 41: 315.
[3] Salve H, et al. Phil Mag B, 1984, 49: 385.
[4] Johnston D C, et al. J Phys Paris, 1983, 44: C3-1615.