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2. A. W. Snow and W. R. Barger, Phthalocyanines: Properties and Applications 1, eds. C. C. Leznoff and A. B. P. Lever (VCH, New York, 1989) pp. 341–392.
3. M. Hanack, Handbook of Conducting Polymers, eds. T. A. Skotheim, R. L. Elsenbaumer and J. R. Reynolds (Marcel Dekker, New York, 1998) pp. 381–407.