Scalable Representation Structures for Visuo-Spatial Reasoning - Dynamic Explorations into Knowledge Types. - Sven Bertel; Jan Frederik Sima; Maren Lindner (AAAI Fall Symposium: Multi-Representational Architectures for Human-Level Intelligence, 2009)

Eye Movements Reflect Reasoning with Mental Images but Not with Mental Models in Orientation Knowledge Tasks. - Jan Frederik Sima; Maren Lindner; Holger Schultheis; Thomas Barkowsky (Spatial Cognition, 2010)