20. Spindel, R. C., Peal K. R. and D. E. Koelsch, A microprocessor acoustic data buoy, Proc. Oceans'78, 527-531, 1978.
21. Spindel, R. C., Porter, R. P., Marquet, W. M. and J. L. Durham, A high-resolution pulse-Doppler underwater acoustic navigation system, IEEE J. Oceanic Eng., 1, 6-13, 1976.
22. Munk, W. H. and C. Wunsch, Ocean acoustic tomography: a scheme for large scale monitoring, Deep Sea Res., 26A, 123-161, 1979.
23. Spindel, R. C., Worcester, PO. F., Webb. D. C., Boutin, P. R., Peal, K. R. and A. M. Bradley, Instrumentation for ocean acoustic tomography, Proc. IEEE OCEANS '82, 92-99, 1982.
24. Spindel, R. C., Ocean acoustic tomography, Proc. of 1st Inter'l. Symp. on Ocean Acoustic Tomography, JAMSTEC, Yokosuka, Japan, pp. 1-10, 13-14 March 1997.
25. The ATOC Consortium, Ocean climate change: comparison of acoustic tomography, satellite altimetry, and modeling, Science, 281, 1327-1332, 1998.
