1. 1) G. PIATTI : Advances in Composite materials (1978), p. 99 [Applied Science Publishers Ltd. London]
2. 2) A. KELLY : Fiber Strength Materials (1979), p. 578 [John Wiley and Sons.]
3. 3) A. P. LEVITT : Whiskers technology (1970), p. 403 [John Wiley and Sons.]
4. 4) A. P. LEVITT : Whiskers technology (1970), p. 403 [John Wiley and Sons.]
5. 9) S. YAJIMA : Chemical Letter (1975), p. 931