Anders I. Mørch, Andreas Girgensohn. JANUS: basic concepts and sample dialog. In Scott P. Robertson, Gary M. Olson, Judith S. Olson, editors, Conference on Human Factors in Computing Systems, CHI 1991, New Orleans, LA, USA, April 27 - May 2, 1991, Proceedings. pages 457-458, ACM, 1991. [doi]
Abstract is missing.