5Kenneth E.Foote and Shannon Cram, Cartographic Communication.
6Goodchild M F. Citizens as voluntary sensors: spatial data infrastructure in the world of Web 2.0[J]. Inter-national Journal of Spatial Data Infrastructures Re- search, 2007(2): 24-32.
7Brent G H, Raymond C, Robert D F, Michael G L, Vivien D. Community-based production of geograph- ic information using open source software and web 2. 0[J]. International Journal of Geographical Informa- tion Science, 2010, 24(5):761-781.
8Budhathoki N R, Bruce B, Nedovic-Budic Z. Recon- ceptualizing the role of the user of spatial data iMra- structure[J]. GeoJournal, 2008, 72(3):149-160.
9Haklay M, Basiouka S, Antoniou V, Ather A. How many volunteers does it take to map an area well? the validity of Linus'law to volunteered geographic infor- mation[J]. The Cartographic Journal, 2010, 47(4) : 315-322.
10VAN TONDER B, WESSON J. Design and evaluation of an a-daptive mobile map-based visualization system [A]. Human-Computer Interaction- INTERACT 2009[C]. 2009. 839-852.
