1. R. N. Gardner: MS Thesis, University of Virginia, Charlottesville, VA, 1975.
2. R. N. Gardner and H. G. F. Wilsdorf:Proc. 4th Int. Conf. on Fracture, T. M.R. Taplin, ed., vol. II, pp. 349–56, University Waterloo Press, Waterloo, Canada, 1977.
3. R. N. Gardner, T. C. Pollock, and H. G. F. Wilsdorf:Mater. Sci. Eng., 1977, vol. 29, pp. 169–74.
4. R. N. Gardner: Ph.D. Dissertation, University of Virginia, Charlottesville, VA, 1977.
5. R. W. Bauer, R. N. Gardner, R. L. Lyes, Jr., T. C. Pollock, and H. G. F. Wilsdorf:Proc. of U.S. Japan HVEM Seminar, pp. 102–05, Honolulu, HI, 1976.