1. G. F. Carter (ed), ?Fatigue and Impact Resistance of Plastics?, Proc. of Fourth Annual Plastics Conf., Eastern Mich. Univ. (Industrial Education Department, 1969).
2. J. Morrow,ASTM STP 378 (1965) 45.
3. R. W. Landgraf,ibid 467 (1970) 3.
4. C. E. Feltner andR. W. Landgraf, ?Selecting Materials to Resist Low Cycle Fatigue?, ASME Paper No. 69-DE-59 (1969).
5. P. Beardmore andS. Rabinowitz, to be published.