1NTIA. Falling Through the Net.. A Survey of the "Have Nots" in Rural and Urban America [R]. http: //www. digital divide. gov/reports, htm, 1995 : 1-87.
2Xue Wei--xian. Wang Jiang--quan. A measure of rural--urban digital divide in China[C]. 2011 International Conference on Busi- ness Management and Electronic Information (BMEI). May, 2011 ,13-15.