8Future trends in geospatial information management: the five to ten year vision, Revised draft based on feedback provided following the Second Session of the UN-GGIM Committee of Experts on Global[J]. Geospatial Informa- tion Management, January 2013.
9Coppock J T, Rhind D W. The history of GIS[J]. Geograph- ical Information Systems, 1991,1(1):21-43.
10Longley P A. The academic success of GIS in geography: Problems and prospects[J]. Journal of Geographical Sys- tems, 2000,2(1):37-42.