1. C.W. Dirk, K.F. Schoch, Jr. and T.J. Marks inConductive Polymers(R.B. Seymour, ed.), Plenum Press, New York, 1981, p. 209.
2. T.J. Marks and D.W. Kalina inExtended Linear Chain Compounds, (J.S. Miller, ed.), Vol. 1, Plenum Press, New York, 1982, p. 197
3. A.A. Berlin, L.G. Cherkashina and E.I. Balabanov, Vysokomol. Soedin,4: 376 (1962).
4. Y. Nose, N. Sera, M. Hatano and S. Kambara,J. Chem. Soc.Japan Ind. chem. Sec,67: 1600 (1964).
5. A.A. Berlin,Russ. Chem. Rev.,48: 1125 (1979).