John K. Tsotsos Gilbert Verghese Sven J. Dickinson Michael R. M. Jenkin Allan D. Jepson Evangelos E. Milios Fernando Nuflo Suzanne Stevenson Michael J. Black Dimitris N. Metaxas PLAYBOT A visually-guided robot for physically disabled children. 275-292 1998 16 Image Vision Comput. 4 http://dx.doi.org/10.1016/S0262-8856(97)00088-7 db/journals/ivc/ivc16.html#TsotsosVDJJMNSBM98