J. Wallace

Inter Observer Variability of the Transcranial Doppler Ultrasound Technique: Impact of Lack of Practice on the Accuracy of Measurement

B. Venkatesh, J. Stuart, J. Lipman, 1999, Journal of Clinical Monitoring and Computing.

Measurement of gastric emptying rate in humans by real-time ultrasound.

S. Holt, A. Wilkinson, J. Wallace, 1986, Gastroenterology.