TY - CONF ID - triebel06:multi T1 - Multi-Level Surface Maps for Outdoor Terrain Mapping and Loop Closing A1 - Triebel, Rudolph A1 - Pfaff, Patrick A1 - Burgard, Wolfram TI - Proc.~International Conference on Intelligent Robots and Systems (IROS) Y1 - 2006 M1 - pdfurl={http://www.informatik.uni-freiburg.de/~triebel/publications/triebel06multi.pdf} M1 - project={A2-ThreeDSpace} M1 - status={Reviewed} ER -