1. I. Shionoya, T. Uchida and K. Nukada, Proc. Conf. Carbon '72 (Baden-Baden), Preprints, p. 293. Arbeitskreis Kohlenstoff DKG.
2. Proc. 2nd Carbon Fibres Conf.;Clarke,1974
3. Proc. Int. Carbon Fibres Conf.;Watt,1971
4. Thermal reactions of polyacrylonitrile
5. Proc. Int. Carbon Fibres Conf.;Bromley,1971