REFERENCES

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Khare, V., 1991, A new ray-theoretic interpretation of time migration: 61st Annual Internat. Mtg., Soc. Expl. Geophys., Expanded Abstracts, 1492-1496.

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Vidale, J., 1988, Finite-difference calculation of travel times: Bull. Seism. Soc. Am., 78, 2062-2076.