Ralph Debusmann Denys Duchier Joachim Niehren The XDG Grammar Development Kit. 188-199 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3389&spage=188 2004 conf/moz/2004 MOZ db/conf/moz/moz2004.html#DebusmannDN04