Walker, W. Medical Imaging 2004: Ultrasonic Imaging and Signal Processing. SPIE Digital Library.
Chicago-viite (17. p.)Walker, William. Medical Imaging 2004: Ultrasonic Imaging and Signal Processing. SPIE Digital Library.
MLA-viite (9. p.)Walker, William. Medical Imaging 2004: Ultrasonic Imaging and Signal Processing. SPIE Digital Library.
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