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2. Y. Aoki, IEEE Trans. on Audio and Electroacoustics, AU-18(1970) , p.258.
3. J. Powers, J. Landry and G. Wade, Acoustical Holography Vol. 2 (Plenum Press, 1970), chap. 13.
4. A. L. Boyer, J. A. Jordan, Jr., D. L. Van Rooy, P. M. Hirsch and L. B. Lesem, Acoustical Holography Vol. 2 (Plenum Press, 1970), chap. 15.
5. J. L. Pfeifer, Acoustical Holography Vol. 4 (Plenum Press, 1972) , p.317.