Brad Blumenthal Juri Gornostaev Claus Unger Human-Computer Interaction, 4th International Conference, EWHCI '94, St. Petersburg, Russia, August 2-5, 1994, Selected Papers EWHCI Lecture Notes in Computer Science 876 Springer 1994 3-540-58648-2 db/conf/ewhci/ewhci1994.html