1. A. K. Barbour, in: Organofluorine Chemicals and Their Industrial Applications (R.E. Banks, ed.), p. 44, Ellis Horwood, Chichester (1979).
2. C. Wakselman and C. Kaziz, J. Fluorine Chem. 33, 347 (1986).
3. T. S. Everett, J. Chem. Educ. 64, 143 (1987).
4. R. Filier, in Ref. l, p. 123.
5. G. T. Newbold, in Ref. 1, p. 169.