http://eos.kub.nl:2080/w3thesis/Readthis/baecker1987.html (Einblicke ins Internet, 10/1995)Author: Baecker, R. M.
Title: Towards an effective characterization of graphical interaction
In: Baecker, R. M. and Buxton, W. A. S. - Human-computer interaction, a multidisciplinary approach, pages 471-481
ISBN: 0-934613-24-9
Sjoerd Michels, Tilburg, The Netherlands