1. Ultrasound in medicine and biology, Special issue on biomedical ultrasound in the next millenium, Ultrasound Med. Biol. 26 (2000) S1–S172, (Used primarily for section near past and present)
2. A history of medical and biological imaging with polivinyledene fluoride (PVDF) transducers;Foster;IEEE Trans. UFFC,2000
3. Contrast and tissue harmonic imaging;Fowlkes,2000
4. Comparison of fundamental and wideband harmonic contrast imaging of liver tumors;Forsberg;Ultrasonics,2000
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