MicroTargeting® platform: an individual stereotaxic device in functional neurosurgery. - Dirk Winkler; Gero Strauß; Jochen Helm; Axel Goldammer; Jens-Peter Schneider; Johannes Schwarz; Jürgen Meixensberger (Int. J. Comput. Assist. Radiol. Surg., 2007)