8DUMAS J S, REDISH J C. A practical guide to usability testing [ M]. [ S. l. ] :Intellect Ltd, 1999.
9HANS H, KIM J. A comparison of screening methods : Selecting important design variables for modeling product usability [ J]. International Journal of Industrial Ergonomics ,2003,32 ( 3 ) : 189-198.
10HAN S H, KIM K, YUN M H. Identifying mobile phone design features critical to user satisfaction [ J ]. Human Factors and Ergonomics in Manufacturing,2004,14 ( 1 ) : 15-29.