References
- BABER , C. and PARKER , A. 1994 . “ Buying a ticket on the Underground ” . In Contemporary Ergonomics 1994 , Edited by: Robertson , S. A. 64 – 69 . London : Taylor & Francis .
- COCHRANE , P. , PAYNE , R. and MACDONALD , B. 1997 . From Kirk to Picard (a vision of mobility) . Personal Technologies , 1 ( 1 ) : 6 – 10 .
- HAWLEY , M. , POOR , R. D. and TUTEJA , M. 1997 . Things that think . Personal Technologies , 1 ( 1 ) : 13 – 20 .
- UNDERKOFFER , J. 1997 . Antisedentary beigeless computing . Personal Technologies , 1 ( 1 ) : 28 – 40 .
- VERHOEF , L. W. M. 1988 . Decision making of vending machine users . Applied Ergonomics , 19 : 103 – 109 .
- WEISER , M. 1991 . The computer for the 21st century . Scientific American , 265 ( 3 ) : 933 – 940 .
- ZWAGA , H. J. G. 1988 . “ Buying a ticket on the Washington metro ” . In Contemporary Ergonomics 1988 , Edited by: Megaw , E. D. 273 – 278 . London : Taylor & Francis .