Erzsébet Angster Joseph Bergin Marianna Sipos Patterns in Teaching Software Development. 130-142 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3013&spage=130 2003 conf/ecoopw/2003 ECOOP Workshops db/conf/ecoopw/ecoopw2003.html#AngsterBS03