7YU W, KANGAS K, BREWSTER S A. Web-based Haptic Applications to Allow Blind People to Create Virtual Graphs [C]//Proceedings of the llth Haptie Symposium. Los Angeles, CA, 2003 : 318-325.
8MENG LIQIU. Multimedia Cartographic Presentations -Animation and Anamorphosis[R]. Zhengzhou: Institute of Surveying and Mapping, Information Engineering University, 2007.
9PIGAS DI, HOPWOOD D, MEMERY D. Communicating Spatial Information via a Multimedia-auditory Interface[C] // EUROMICRO Conference 1999 Proceedings 25th, 1999 : 398-405.
10WETZEL, KEITH. Speech-Recognizing Computers: A Written-Communication Tool for Students with Learning Disabilities[J]. Journal of Learning Disabilities (S1354- 4187) ,1996,29(4) :371.