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2. W.L. Lachmann, J.A. Crawford, and L.E. McAllister, paper presented at the 2nd Int. Conference on Composite Materials, Toronto, Canada (1978).
3. R.J. Diefendorf, Proc. of Carbon Comp. Techn. Symp., 10th Annual ASME Symposium, New Mexico (1970).
4. W.V. Kotlensky, Proc. 16th Nat. Sampe Symp. and Exhib., Anaheim, California (1971).
5. H.M. Stoller and E.R. Frye, Sampe Quarterly, 3(3), 10 (1971).