Thomas E. Horton Lloyd Williams Wei Mu Robert St. Amant Visual Affordances and Symmetries in Canis habilis: A Progress Report. 72-78 2008 AAAI Fall Symposium: Naturally-Inspired Artificial Intelligence http://www.aaai.org/Library/Symposia/Fall/2008/fs08-06-013.php conf/aaaifs/2008-6 db/conf/aaaifs/aaaifs2008-06.html#HortonWMA08