REFERENCES

Albertin, U., Yingst, D., and Jaramillo, H., 2001, Comparing common-offset Maslov, Gaussian beam, and coherent state migrations: 71st Ann. Internat. Mtg., Soc. of Expl. Geophys., Expanded Abstracts, 913-916.

Albertin, U., Yingst, D., Jaramillo, H., Wiggins, W., Chapman, C., and Nichols, D., 2002, Towards a hybrid raytrace-based beam/wavefield-extrapolated beam migration algorithm: 72nd Ann. Internat. Mtg, Soc. of Expl. Geophys., Expanded Abstracts, 1344-1347.

Alkhalifah, T., Fomel, S., and Biondi, B., 2001, The space-time domain: theory and modelling for anisotropic media: Geophysical Journal International, 144, 105-113.

Biondi, B., and Sava, P., 1999, Wave-equation migration velocity analysis: 69th Ann. Internat. Meeting, Soc. of Expl. Geophys., Expanded Abstracts, 1723-1726.

Biondi, B., Fomel, S., and Alkhalifah, T., 1997, ``Focusing'' eikonal equation and global tomography: SEP-95, 61-76.

Biondi, B., 2002, Stable wide-angle Fourier finite-difference downward extrapolation of 3-D wavefields: Geophysics, 67, no. 03, 872-882.

Brandsberg-Dahl, S., and Etgen, J., 2003, Beam-wave migration: 65th Mtg., Eur. Assoc. Geosc. Eng., Abstracts.

Chen, L., Chen, Y., and Wu, R., 2002, Target-oriented prestack beamlet migration using Gabor-Daubechies frames: 72nd Ann. Internat. Mtg, Soc. of Expl. Geophys., Expanded Abstracts, 1356-1359.

Claerbout, J. F., 1985, Imaging the Earth's Interior: Blackwell Scientific Publications.

Clapp, R. G., 2001, Geologically constrained migration velocity analysis: Ph.D. thesis, Stanford University.

de Hoop, M. V., 1996, Generalization of the Bremmer coupling series: J. Math. Phys., 3246-3282.

Etgen, J., 2002, Waves, beams and dimensions: an illuminating if incoherent view of the future of migration: 72nd Ann. Internat. Mtg, Soc. of Expl. Geophys., invited presentation.

Fomel, S., and Claerbout, J. F., 1997, Exploring three-dimensional implicit wavefield extrapolation with the helix transform: SEP-95, 43-60.

Gazdag, J., and Sguazzero, P., 1984, Migration of seismic data by phase-shift plus interpolation: Geophysics, 49, no. 2, 124-131.

Gray, S., Notfors, C., and Bleistein, N., 2002, Imaging using multi-arrivals: Gaussian beams or multi-arrival Kirchhoff?: 72nd Ann. Internat. Mtg, Soc. of Expl. Geophys., Expanded Abstracts, 1117-1120.

Hale, D., Hill, N. R., and Stefani, J., 1992, Imaging salt with turning seismic waves: Geophysics, 57, no. 11, 1453-1462.

Hale, D., 1991, Stable explicit depth extrapolation of seismic wavefields: Geophysics, 56, no. 11, 1770-1777.

Hill, N. R., 1990, Gaussian beam migration: Geophysics, 55, no. 11, 1416-1428.

Hill, N. R., 2001, Prestack Gaussian-beam depth migration: Geophysics, 66, no. 4, 1240-1250.

Huang, L. Y., and Wu, R. S., 1996, Prestack depth migration with acoustic screen propagators: 66th Ann. Internat. Mtg, 415-418.

Nichols, D., and Palacharla, G., 1994, Band-limited Green's functions in 3-D: SEP-80, 17-24.

Nichols, D. E., 1994, Imaging complex structures using band-limited Green's functions: Ph.D. thesis, Stanford University.

Nichols, D. E., 1996, Maximum energy traveltimes calculated in the seismic frequency band: Geophysics, 61, no. 01, 253-263.

Qian, J., and Symes, W. W., 2002, Finite-difference quasi-P traveltimes for anisotropic media: Geophysics, 67, no. 1, 147-155.

Rickett, J., Claerbout, J., and Fomel, S., 1998, Implicit 3-D depth migration by wavefield extrapolation with helical boundary conditions: 68th Ann. Internat. Meeting, Soc. of Expl. Geophys., Expanded Abstracts, 1124-1127.

Rietveld, W. E. A., and Berkhout, A. J., 1994, Prestack depth migration by means of controlled illumination: Geophysics, 59, no. 05, 801-809.

Ristow, D., and Ruhl, T., 1994, Fourier finite-difference migration: Geophysics, 59, no. 12, 1882-1893.

Sava, P., and Fomel, S., 2001, 3-D traveltime computation using Huygens wavefront tracing: Geophysics, 66, no. 3, 883-889.

Sava, P., and Fomel, S., 2002, Wave-equation migration velocity analysis beyond the Born approximation: 72nd Ann. Internat. Mtg., Soc. of Expl. Geophys., Expanded Abstracts, 2285-2288.

Sava, P., Biondi, B., and Fomel, S., 2001, Amplitude-preserved common image gathers by wave-equation migration: 71st Ann. Internat. Mtg., Soc. of Expl. Geophys., Expanded Abstracts, 296-299.

Sava, P., 2000, A tutorial on mixed-domain wave-equation migration and migration velocity analysis: SEP-105, 139-156.

Shan, G., and Biondi, B., 2003, WKBJ and amplitude preserving one-way wave equation: SEP-114, 67-70.

Shragge, J., and Biondi, B., 2003, Wavefield extrapolation in phase-ray coordinates: SEP-114, 31-44.

Stoffa, P. L., Fokkema, J. T., de Luna Freire, R. M., and Kessinger, W. P., 1990, Split-step Fourier migration: Geophysics, 55, no. 04, 410-421.

Synge, J. L., and Schild, A., 1978, Tensor calculus: Dover.

Cervený, V., 2001, Seismic ray theory: Cambridge Univ. Press.

Vinje, V., Iversen, E., and Gjoystdal, H., 1993, Traveltime and amplitude estimation using wavefront construction: Geophysics, 58, no. 08, 1157-1166.

Yedlin, M., 1981, The wave equation in ray-centered coordinates: SEP-28, 89-92.

Zhang, Y., Sun, J., Notfors, C., Bleistein, N., and Zhang, G., 2001, Towards accurate amplitudes for one-way wavefield extrapolation of 3-D common shot records: 71st Ann. Internat. Mtg., Soc. of Expl. Geophys., Workshop presentation.

A