http://blog.csdn.net/happylee6688/article/details/38926791
http://www.itnpc.com/news/web/146375406669578.html
http://wenku.baidu.com/link?url=LAoI5_k3HOKbI3BR9MvohIA8-wjNBBJvpL2TPLyQHV4lwnoFOO_pzSa8Lx-uU_jKWR4U-9tOVpcLnDa2HFVwSAjHWoI9wfgJENM5R473hJO
http://wenku.baidu.com/view/af8a8bc558f5f61fb7366667.html?re=view
http://wenku.baidu.com/view/bebff8c4aa00b52acfc7ca71.html
http://wenku.baidu.com/view/d4e3304e767f5acfa1c7cdf3.html