Aaron Stafford, Bruce H. Thomas, Wayne Piekarski. Comparison of techniques for mixed-space collaborative navigation. In Gerald Weber, Paul R. Calder, editors, User Interfaces 2009, Tenth Australasian User Interface Conference, AUIC 2009, Wellington, New Zealand, January 2009. Volume 93 of CRPIT, pages 65-64, Australian Computer Society, 2009. [doi]