REFERENCES

Claerbout, 1998, Multidimensional recursive filters via a helix: Geophysics, 63, 1532-1541.

Kolmogoroff, A., 1939, Sur l'interpolation et l'extrapolation des suites stationnaires: C.R.Acad.Sci.(Paris), 208, 2043-2045.

Rickett, J., and Claerbout, J., 1999a, Acoustic daylight imaging via spectral factorization: Helioseismology and reservoir monitoring: The Leading Edge, 18, 957-960.

Rickett, J. E., and Claerbout, J. F., 1999b, Calculation of the acoustic solar impulse response by multi-dimensional spectral factorization: Solar Physics, accepted for publication.