1. S Jinet al, Science 264, 413 (1994)
2. C N R Rao and B Raveau (eds),Colossal magnetoresistance, charge ordering and related properties of manganese oxides (World Scientific, Singapore, 1998)
3. Y Tokura (ed.),Colossal magnetoresistance oxides (Gordon and Breach, New York, 2000)
4. C N R Rao, Anthony Arulraj, A K Cheetham and B Raveau,J. Phys. Condens. Matter 12, R83 (2000)
5. M B Salamon and M Jaime,Rev. Mod. Phys. 73, 583 (2001)