1. 2006-04-02 Re: Article on Open Source (German), mention Karl-Heinz Zimme 2. 2006-04-01 Re: Article on Open Source (German), mention Alfredo Beaumont 3. 2006-04-01 Re: Article on Open Source (German), mention Boudewijn Rempt 4. 2006-04-01 Article on Open Source (German), mentions KD Christian Muelle