Quelle: http://commons.wikimedia.org/wiki/File:Osterstrauss_08.jpg
- http://www.dw-world.de/dw/article/0,,1970177,00.html
- http://www.dw-world.de/dw/article/0,,15351321,00.html
- http://www.dw-world.de/dw/article/0,,1970882,00.html
- http://www.dw-world.de/dw/article/0,,4172186,00.html?maca=spa-rss-sp-all-1122-rdf
