Andreas Petersik Bernhard Pflesser Ulf Tiede Karl Heinz Höhne Rudolf Leuwer Haptic Volume Interaction with Anatomic Models at Sub-Voxel Resolution. 66-72 2002 Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems http://computer.org/proceedings/haptics/1489/14890066abs.htm db/conf/haptics/haptics2002.html#PetersikPTHL02