II, John Q. Navigational techniques to improve the display of large two-dimensional spaces. Behaviour & Information Technology. 1990, 9 (6): 451–466. doi:10
social isolation on the behaviour and performance of juvenile lizards, Chamaeleo calyptratus. (页面存档备份,存于互联网档案馆) Animal Behaviour 88 1-6. Kelso, E. C. and