References

http://www.nytimes.com/1991/07/11/garden/history-and-a-name-in-a-vienna-project.html
http://en.wikipedia.org/wiki/Karl-Marx-Hof
http://www.wien.info/article.asp?IDArticle=16316
http://www.planetware.com/vienna/karl-marx-hof-a-w-kmh.htm