Florida Estrella Zsolt Kovacs Jean-Marie Le Goff Richard McClatchey Norbert Toth Reifying Design Patterns to Facilitate Systems Evolution. 75-87 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2784&spage=75 2002 conf/er/2002 ER (Workshops) db/conf/er/erw2002.html#EstrellaKGMT02