Luis Filipe Andrade José Luiz Fiadeiro Architecture Based Evolution of Software Systems. 148-181 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2804&spage=148 2003 conf/sfm/2003 SFM db/conf/sfm/sfm2003.html#AndradeF03