1. See for example: G. Booth and J. Chatt,J. Chem. Soc., A, 2099 (1962).
2. See for example: M. Bigorgne,Bull. Soc. Chim. Fr., 1986 (1960).
3. See for example: P. W. Jolly and G. Wilke,The Organic Chemistry of Nickel, Academic Press, New York, 1974, vol. 1.
4. P. W. Jolly and G. Wilke,The Organic Chemistry of Nickel, Academic Press, New York, 1975, vol. 2.
5. G. Bontempelli, B. Corain and L. De Nardo,J. Chem. Soc., Dalton Trans., 1887 (1977).