1. Nenitzescu, CD.; Balaban, A.T. in “Friedel-Crafts and Related Reactions”; Olah, G.A. Ed.; Wiley: New York, 1964; Vol. Ill, Chapter 37.
2. Groves, J.K. Chem. Soc. Rev. 1972, 1 , 73.
3. House, H.O. “Modern Synthetic Reactions”, W.A. Benjamin: New York, 2d ed., 1972, pp. 786-797.
4. Satchell, D.P.N.; Satchell R.S. Q. Rev. Chem. Soc, 1971, 25, 171.
5. Colvin E.W. Chem. Soc. Rev. 1978, 7, 15;