Yunxiang Ling Rui Li Qizhi Chen Songyang Lao Research on Command Space Cognitive Concept Model and Multi-fingers Touch Interactive Method. 1221-1230 2007 conf/icic/2007-1 ICIC (1) http://dx.doi.org/10.1007/978-3-540-74171-8_124 db/conf/icic/icic2007-1.html#LingLCL07