The paper that you are looking for has been taken off-line because it will shortly appear as:

@inproceedings{Johnson:98a,
        TITLE = "On the Use of Pseudo-3D Images in Human Computer Interaction",
        AUTHOR = "C.W. Johnson",
        PROCEEDINGS = "HCI'98",
        PUBLISHER = "Springer Verlag",
        ADDRESS = "London, United Kingdom",
        PAGES = "",
        NOTE = "Accepted and to appear",
        YEAR = "1998"}