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1 Introduction
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2 Wave equation for acoustic waves in the convection zone
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3 Scattering
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4 The Rytov approximation
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5 The correlation function
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6 Sensitivity kernels for wave travel times
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7 Constructing Green's functions
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8 Frequency-integrated sensitivity kernel
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9 Approximate sensitivity kernels
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10 Comparison with global-mode approach
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11 Extending the theory
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12 Concluding remarks
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References
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Online Material
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Appendix A: Derivation of wave equation
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Appendix B: Rytov wave equation
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Appendix C: Determination of the travel time
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Appendix D: Ray-based Green's functions
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