YuQing Yan Shixian Li Weijun Sun Dependency based Technique for Identifying the Ripple Effect of Requirements Evolution. 544-550 2012 7 J. Softw. 3 https://doi.org/10.4304/jsw.7.3.544-550 http://www.jsoftware.us/index.php?m=content&c=index&a=show&catid=89&id=1183 db/journals/jsw/jsw7.html#YanLS12