By Liechti O.   Sumi Y.   in International Journal of Human-Computer Studies

ISSN:1071-5819|56|1|1-5

Academic Press‎(2002)‎

Access to resources Favorite 11.992116

By Liechti O.   Sifer M.   Ichikawa T.   in World Wide Web

ISSN:1386-145X|2|4|191-208

Springer Publishing Company ‎(1999)‎

Access to resources Favorite 9.436277