1. B. A. Newcomb, Composites, Part A 91, 262 (2016).
2. J. A. Newell, Encyclopedia of Polymer Science and Technology (Wiley, New York, 2005), Vol. 9, p. 91.
3. A. A. Konkin, Carbon and Other Heat-Resistant Fibers (Khimiya, Moscow, 1974), p. 39 [in Russian].
4. E. Fitzer, Carbon 27, 621 (1989).
5. D. L. Johnson, US Patent No. 3447956 (1969).