1. Perkins WG, Porter RS (1977) J Mater Sci 12:2355
2. Cifferi A, Ward IM (eds) (1979) Ultra High Modulus Polymers, Adv Sci Publ, London
3. Zachariades AE, Porter RS (eds) (1983) The Strength and Stiffness of Polymers, M Dekker, New York Basel
4. Woods DW, Busfield WK, Ward IM (1984) Polymer 25:298
5. Ellison MS, Zeronian SH, Fujiwara Y (1984) J Mater Sci 19:82