TY - JOUR T1 - AI approaches to cognitive systems – The example of spatial cognition A1 - Nebel, Bernhard A1 - Freksa, Christian JA - Informatik Spektrum 34, 5 Y1 - 2011 SP - 462 EP - 468 M2 - doi: 10.1007/s00287-011-0555-6 ER -