Cascaded refactoring for framework. - Gregory Butler; Lugang Xu (SSR, 2001)

Issues in Architectural Modeling and Evolution in the Know-It-All Case Study. - Gregory Butler; Xin Shen; Lugang Xu (ECBS, 2003)

Cascaded Refactoring for Framework Development and Evolution. - Lugang Xu; Greg Butler (ASWEC, 2006)