S. K. Buhl, A. K. Duun-Christensen, B. H. Kristensen, and C. F. Behrens, “Clinical evaluation of 3D/3D MRI-CBCT automatching on brain tumors for online patient setup verification – A step towards MRI-based treatment planning”, AO, vol. 49, no. 7, pp. 1085–1091, Oct. 2010.