1. E. S. Folias, Int. J. Frac. Mech., 1 (1965) 104.
2. E. S. Folias, Ibid., 1 (1965) 20.
3. K. Marguerre, Proc. 5th Int. Congr. Appl. Mech., 93 (1938).
4. E. Reissner, Proc. 1st Symp. Naval Struc. Mech., Pergamon, 74 (1960).
5. E. S. Folias, ARL 64-174, Aerospace Research Labs., Office of Aerospace Research, USAF, October 1964.