Kramschuster, K. and Mitchell, J.
Atypical suboccipital vertebral artery blood flow in healthy subjects: Case studies using real-time ultrasound.
Physiotherapy Theory and Practice, 25 (3).
Available from: http://eprints.uwe.ac.uk/1589
Mitchell, J. and Kramschuster, K.
Real-time ultrasound measurements of changes in suboccipital vertebral artery diameter and blood flow velocity associated with cervical spine rotation.
Physiotherapy Research International, 13 (4).
Available from: http://eprints.uwe.ac.uk/1579