1. Azimi, M. and Kar, A.C. (1985), Multiple Scattering and Attenuation Phenomena in Diffraction Imaging., Technical Report, TR-EE-85–4,School Elec. Eng., Purdue Univ.
2. Glover, G.H. and Sharp, J.L. (1977), Reconstruction of Ultrasound Propagation Speed Distribution in Soft Tissue: Timeof-Flight Tomography., IEEE Trans. Sonics and Ultrasonics, volume SU-24, july.
3. Greenleaf, J.F., Johnson, S.A., Lee, S.L., Herman, G.T. and Wood, E.H. (1974), Algebraic Reconstruction of Spatial Distributions of Acoustic Absorption within Tissue from their Two Dimensional Projections. in Acoustical Holography, volume 5, New York: Plenum Press, pages 591–603
4. Jakowatz Jr, C.V. and Rak, A.C. (1976), Computerized Tomography Using X-Rays and Ultrasound, School Elec. Eng., Purdue Univ., West Lafayette, IN, Res.Rep. TR-EE 76–26.
5. Johnson, S. Greenleaf,J., Tanaka, M., Rajoogopalan, B., and Bahn, R. (1978), Quantitative Synthetic Aperture Reflection Imaging with Correction for Refraction and Attenuation: Application of Seismic Techniques in Medicine,IEEE Biomedical Symposium Proceedings.