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			| Urs J. Bucher
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								S. R. Ellis, U. J. Bucher,  & B. M. Menges (1995) The Relationship of Binocular Convergence and Errors in Judged Distance to Virtual Objects, Proceedings of the  International Federation of Automatic Control   June 27-29,  1995 Boston, Mass. pp. 297-301.
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								U. J. Bucher,  & S. R. Ellis (1994) Distance perception of stereoscopically presented virtual objects superimposed by a head mounted see through display, Proceedings, 38th Annual Meeting of the Human Factors and Ergonomics Society, Santa Monica CA, 1994. pp. 1300-1305.
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