http://www.cnblogs.com/pangguoming/p/4922422.html
http://www.ibm.com/developerworks/cn/rational/rationaledge/content/jun05/bittner/
http://blog.csdn.net/mvpyao/article/details/42741269
迭代式开发使用方法总结
原文：http://www.cnblogs.com/Amos-Turing/p/6362324.html
