1. H. C. Brown,?Hydroboration.? New York (1962), p. 209.
2. R. Köster, G. Griasnow, and W. Larbig, Liebigs Ann. Chem.,672, 1 (1964).
3. R. Köster and W. Larbig, German Patent No. 1,124,038 (1962).
4. R. Polster, Liebigs Ann. Chem.,654, 20 (1962).
5. K. Ziegler, in ?Organometallic Chemistry.? New York (1960), pp. 234?235.