Blocking between landmarks during 2-D (touchscreen) and 3-D (ARENA) search tasks with pigeons
Learning & Behavior (2014) - Comment
pubmed: 25209533  doi: 10.3758/s13420-014-0153-y  issn: 1543-4508  issn: 1543-4494 

Kenneth J. Leising, Jared Wong, Chad M. Ruprecht, Aaron P. Blaisdell