1. B. W. Rosen, Amer. Inst. Aero. Astro. J. 2 (1964) 1985.
2. C. Zweben, ibid. 6 (1968) 2325.
3. C. Zweben, and B. W. Rosen, J. Mech. Phys. Solids 18 (1970) 189.
4. P. W. Barry, Fibre Sci. Tech. (submitted for publication).
5. W. B. Fichter, NASA Technical Report TND-5453 (1969).