1. A. F. Metherell, H. M. A. El-Sum, and L. Larmore, editors, Acoustical Holography, Vol. 1, Plenum Press, New York (1969).
2. R. K. Mueller and P. N. Keating, ibid., Chapter 3.
3. B. B. Brenden, ibid., Chapter 4.
4. R. B. Smith and B. B. Brenden, IEEE Symposium on Sonics and Ultrasonics, September 25–27, 1968, New York.
5. L. H. Enloe, W. C Jakes, Jr., and C. B. Rubinstein, Bell System Tech.
47:1875 (1968).