1. Rao, K.J. (ed.) Perspectives in Solid State Chemistry (Narosa, New Delhi, 1995).
2. Rao, C.N.R. & Raveau, B. Transition Metal Oxides (VCH, Weinheim, 1995).
3. Hervieu, M., Mellène, B., Retoux, R., Boudin, S. & Raveau, B. Nature Mater. 3, 269–273 (2004).
4. Kroto, H.W. et al. Nature 318, 162–167 (1985).
5. Bakakin, V.V. et al. Zhur. Strukt. Khim. 35, 92–97 (1994).