|   2006 |   2005 |   2004   |   2003   |   2002   |   2001   |   2000   |   1999   |   1998  |    1997   |   1996   |     |   1995 and earlier   | TOC Consortium: A. B. Baggeroer, T. G. Birdsall, C. Clark, J. A. Colosi, B. D. Cornuelle, D. Costa, B. D. Dushaw, M. Dzieciuch, A. M. G. Forbes, C. Hill, B. M. Howe, J. Marshall, D. Menemenlis, J. A. Mercer, K. Metzger, W. Munk, R. C. Spindel, D. Stammer, P. F. Worcester, and C. Wunsch, "Observing ocean climate change: Comparison of acoustic tomography, satellite altimetry, and modeling," Science, 281, 1327-1332 (1998). Howe, B. M., K. Runciman, and J. A. Secan, "Tomography of the ionosphere: Four-dimensional simulations," Radio Science, 33, 109-128 (1998). Ivakin A.N. (1998), "A unified approach to volume and roughness scattering," J. Acoust. Soc. Am., 103(2), 827-837. Ivakin A.N. and Jackson D.R. (1998), "Effects of shear elasticity on sea bed scattering: Numerical examples," J. Acoust. Soc. Am., 103(1), 346-354. Jackson D.R. and Ivakin A.N. (1998), "Scattering from elastic sea beds: First-order theory," J. Acoust. Soc. Am., 103(1), 336-345. Darrell R. Jackson, Anatoliy N. Ivakin, "Scattering from elastic sea beds: First-order theory," J. Acoust. Soc. Am., 103, 336-345 (1998). Park, M. and R.I. Odom, "Effects of Elastic Heterogeneities and Anisotropy on Mode Coupling and Signals in Shallow Water," J. Acoust. Soc. Am., 104, 747-757 (1998).