References for the Ray Acoustics Interface
1. L.D. Landau and E.M. Lifshitz, Fluid Mechanics, Course of Theoretical Physics, Volume 6, Butterworth-Heinemann, 2003.
2. O.N. Stavroudis, The Optics of Rays, Wavefronts, and Caustics, Academic, 1972.
3. R.M. More and K. Kosaka, “Wave-front curvature in geometrical optics”, Phys. Rev. E, vol. 57, no. 5, pp. 6127–6134, 1998.
4. A.D. Pierce, Acoustics: An Introduction to Its Physical Principles and Applications, Acoustical Society of America, 1991.
5. F.B. Jensen, W.A. Kuperman, M. B. Porter, and H. Schmidt, Computational Ocean Acoustics, Second Edition, Springer, 2011.