Walton L., Bomford CK, Ramsden D.1987The Sheffield stereotactic radiosurgery umt- physical characteristics and principles of operationBr J Radiology60897-906
3.
Walton L., Hampshire A., Forster Dmc, Kemeny AA1996A phantom study to assess the accuracy of stereotactic localization using t1 weighted Magnetic Resonance Imaging with the Leksell stereotactic systemNeurosurgery38 (1). 170-178