References

: Geoltrain, S., and Brac, J., April 1993, Can we image complex structures with first-arrival traveltime?: Geophysics, 58, no. 4, 564-575.
: van Trier, J., and Symes, W. W., 1991, Upwind finite-difference calculation of traveltimes: Geophysics, 56, no. 6, 812-821.
: Versteeg, R., and Grau, G., 1990, Practical aspects of seismic data inversion, the marmousi experience EAEG Workshop, 52nd EAEG Meeting, Eur. Assoc. Expl. Geophys., Proceedings of 1990 EAEG Workshop, 52nd EAEG Meeting, 1-194.

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