1. Kroto, H.W., Heath, J.R., O'Brien, S.C., Curl, R.F and Smalley, R.E., Nature 1985, 318, 162.
2. Kratschmer, W., Lamb, L.D., Fostiropoulos, K., and Huffman, D.R., Nature 1990, 347, 354.
3. Iijima, S., Nature 1991, 354, 56.
4. Ajayan, P.M. and Iijima, S., Nature 1992, 358, 23.
5. Ebbesen, T.W. and Ajayan, P.M., Nature 1992, 358, 20.
6. Terrones, H., Terrones, M. and Hsu, W.K., Chem. Soc. Reviews 1995, 24, 341.