00577pamaa2200157 4500 0000051620 20130816090000.0 130616s2010 eng ACM Transactions On Computer-Human Interaction : vol.17, no.1-4, 2010. New York, NY: Association for Computing Machinery, 1994-. v.: ill.; 26 cm. 1994- : ACM series on computing methodologies Title from cover Human-computer interaction -- Periodicals Association for Computing Machinery www.acm.org