http://tech.hqew.com/fangan_486879
http://www.docin.com/p-1391419622.html
https://baike.baidu.com/item/%E6%B7%B7%E5%90%88%E4%BB%BF%E7%9C%9F%E6%96%B9%E6%B3%95/12602236
https://wenku.baidu.com/view/0358081c0640be1e650e52ea551810a6f524c826.html
https://wenku.baidu.com/view/5b877a7a4b7302768e9951e79b89680203d86bb6.html
http://www.doc88.com/p-9969421504567.html
https://wenku.baidu.com/view/355f405f5022aaea988f0f77.html
https://wenku.baidu.com/view/8477d6d2b8f3f90f76c66137ee06eff9aef8492f.html