Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

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	6	C. Garoff-Mercier and M. Chollet. Analyse de l'activit~ des contr~leurs du trafic a~rien : utilisation des vecteurs d'information et des communications. Technical Report R90-07, Centre d'Etudes de la Navigation A~erienne, 1990.
	7	David Goldberg , Cate Richardson, Touch-typing with a stylus, Proceedings of the SIGCHI conference on Human factors in computing systems, p.80-87, April 24-29, 1993, Amsterdam, The Netherlands  [doi>10.1145/169059.169093]
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	12	Dean Harris Rubine, The automatic recognition of gestures, Carnegie Mellon University, Pittsburgh, PA, 1992
	13	Dan Venolia , Forrest Neiberg, T-Cube: a fast, self-disclosing pen-based alphabet, Proceedings of the SIGCHI conference on Human factors in computing systems: celebrating interdependence, p.265-270, April 24-28, 1994, Boston, Massachusetts, United States  [doi>10.1145/191666.191761]
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