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2. Green, A.G., Woodhead, A.E. (1910) J. Chem. Soc. Trans. 97, 2388.
3. Green, A.G., Woodhead, A.E. (1912) J. Chem. Soc. Trans. 101, 1117.
4. For recent progress, see Proc. Int. Conf. on Science and Technology of Synthetic Metals, Kyoto, Japan, June 1986 (Synth. Met. 17–19 (1987));
5. Sante Fe, NM, June 1988 (Synth Met. 27–29 (1989))