I want to cite inside Wikipedia sources which are stored in my JabRef Database. According to the jabref-documentation  I need a custom exportfilter which is a file like 
wikipediacitation.layout. This layout file converts a JabRef database into the wikipedia-syntax for pasting it at the end of an article. The description of the output format is given here.  My problem is, that the creation of a Jabref-layout-file seems to be complicated. Can anybody help?
JabRef exportfilter for Wikipedia citation
221 views Asked by Manuel Rodriguez At
        	1
        	
        
	
                        
I've found the answer by myself.
The following files have to be created:
Then, a new export filter has to be added into Jabref (options -> manage custom exports -> add new). But even I've found myself the answer, thanks to Stackoverflow for listening to my problem.