Sven Bertel Jan Frederik Sima Maren Lindner Scalable Representation Structures for Visuo-Spatial Reasoning - Dynamic Explorations into Knowledge Types. 2009 AAAI Fall Symposium: Multi-Representational Architectures for Human-Level Intelligence http://aaai.org/ocs/index.php/FSS/FSS09/paper/view/955 conf/aaaifs/2009-5 db/conf/aaaifs/aaaifs2009-05.html#BertelSL09