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2. Where are you pointing at? A study of remote collaboration in wearable videoconference system;Bauer,1999
3. MoCCA: A mobile communication and computing architecture;Smailagic,1999
4. Vital Signs Monitor, Fitsens, http://www.fitsense.com/, FitSense Technology, 21 Boston Road, PO Box 730, Southborough, MA 01772.
5. Smart sight: A tourist assistant system;Yang,1999