1. K. Tsutomu, Chem. Soc. Rev. 33 (2004) 437.
2. E.C. Niederhoffer, J.H. Timmons, A.E. Martell, Chem. Rev. 84 (1984) 137.
3. A. Bottcher, T. Takeuchi, K.I. Hardcastle, T.J. Meade, H.B. Gray, Inorg. Chem. 36 (1997) 2498.
4. W.M. Coleman, L.T. Taylor, J. Am. Chem. Soc. 93 (1971) 5446.
5. N. Nishinaga, H. Tomita, J. Mol. Catal. 7 (1980) 179.