1. Kossoff, G., W. J. Garrett, and G. Ranavanovich: Grey scale ecography in obstetrics and gynecology. Australasian Radiology 28(1) March, 1974, pp 63–111.
2. Keating, P. N., R. F. Koppelrnann, T. Sawatari, and R. F. Steinberg: Holographic aperture synthesis via a transmitter array. Acoustical Holography, 6 (Ed: Newell Booth),, Plenum Press, New York, 1975, pp 485–506.
3. Johnson, S. A., J. F. Greenleaf, F. A. Duck, A. Chu, W. F. Samayoa, and B. K. Gilbert:
4. Digital ‘computer simulation study of a real-time collection,. postprocessing synthetic focusing ultrasound cardiac camera. Acoustical Holography,, 6 (Ed: Newell Booth ), Plenum Press„ New York, 1975, pp 193–211.
5. Greenleaf, J. F., S. A. Johnson, W. F. Samayoa, and F. A. Duck:` Algebraic reconstruction of spatial distributions of acoustic velocities in tissue from their time of flight profiles. Acoustical Holography, 6(Ed: Newell Booth), Plenum Press, New York, 1975, pp 71–90.