Communicating Eye-gaze Across a Distance: Comparing an Eye-gaze enabled Immersive Collaborative Virtual Environment, Aligned Video Conferencing, and Being Together. - David J. Roberts 001; Robin Wolff; John Rae; Anthony Steed; Rob Aspin; Moira McIntyre; Adriana Peña 001; Oyewole Oyekoya; William Steptoe (VR, 2009)