6Mitasova. M N H. Open Source GIS:A GRASS GIS approach [M]. NewYork: Springer, 2007.
7Wisianto A, Saniya H, Gumilar O. Integrating Pipeline Data Management Application and Google Maps Dataset on Web Based GIS Application Using Open Source Technology Sharp Map and Open Layers[C].ASME, 2010.
8Chen D S S C C. Assessment of open source GIS software for water resources management in developing countries[J].Journal of Hydroenviron- ment Research.2010, 4(3) :253-264.
10Bourgeois F, Guiard Y. Multiscale pointing facilitating pan-zoom coordination[C]//CHI'02 extended abstracts on Human factors in computing systems. ACM, 2002:758-759.