References
- Hughes , J. G. and Robson , R. submitted for publication
- McFadyen , W. D. , Robson , R. and Schaap , H. 1978 . J. Coord. Chem. , 8 : 59 and references therein
- McFadyen , W. D. and Robson , R. 1976 . J. Coord. Chem. , 5 : 49 and ref. 2 and references therein
- Ullman , F. and Brittner , K. 1909 . Ber. , 42 : 2539