XML DOM Tutorial: 

• http://www.w3schools.com/dom/default.asp

Microsoft DOM Reference:

• http://msdn.microsoft.com/en-us/library/ms764730(VS.85).aspx

XPATH Tutorial:

• http://www.w3schools.com/xpath/default.asp
• http://www.quackit.com/xml/tutorial/xpath_predicate.cfm

XSLT Tutorial:

• http://www.topxml.com/xsl/tutorials/intro/default.asp
• http://www.w3schools.com/xsl/xsl_intro.asp
• http://www.w3.org/TR/xslt
• XSLT-Funktionen in C# ausführen: http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=64