1. Mueller, R., Proc. IEEE, Vol. 59, 9, 1319, 1971.
2. For example, Koch, W. E., Electronics, October 12, 1970.
3. Wells, W. H., Acoustical Holography, Vol. 2, ed. by A. I. Metherell and L. Larimore, New York, Plenum, 87, 1970.
4. Marom, E., Mueller, R. K., Koppelmann, R. F., and Zilinskas, G., Acoustical Holography, Vol. 3, ed. by A. F. Metherell, New York, Plenum, 191, 1971.
5. For example, Goldman, S., Optical Processing of Information, ed. by D. K. Pollack, C. J. Koester and J. T. Tippett, Baltimore, Spartan, 31, 1963.