3Gong Jianya,Some Theory and Technologies of current GIS( in Chinese),1999年
4Zhang Wei,武汉测绘科技大学学报,1995年,Supplement期
5Zheng Mingzhu,Micro Station MDL Use Manual( in Chinese),1993年
6FRITSCH D.GIS Data Revision-visions and Reality[R].Keynote Speech in Joint ISPRS Commission Workshop on Dynamic and Multidimensional GIS. Beijing: NGCC,1999.