BRDFs and Java vs. C#

When I moved to the new server, I forgot to upload some papers (or whatever you would like to call them) I once wrote. Interestingly, three people (!) already asked for them during the last weeks. Wow. But I still think this is quite boring stuff. Both in german language:

Einige BRDF Modelle. (BRDF Models explained, with lots of examples, pictures and formulas)

Vergleich der objektorientierten Programmiersprachen Java und C# (Java vs. CSharp, compared)

Have fun reading/citing/ignoring/whatever them.