Comparing dogs and great apes in their ability to visually track object transpositions
Animal Cognition (2009) - Comment
pubmed: 19471978  doi: 10.1007/s10071-009-0238-8  issn: 1435-9456  issn: 1435-9448 

Eveline F. Rooijakkers, Juliane Kaminski, Josep Call