[rules-dev] refactoring drools

[Franz Schwab]

Hi,
I'm a computer science student and am writing the related-work part for 
my diploma thesis and would be interested in (scientific) papers or 
information about refactoring or transformation possibilities which can 
be done with drools / jboss rules in order to improve design of a 
knowledge base or simply to delete bad smells. I have to admit that I 
never worked with drools, as I said I just need that for the 
related-work part.
Could you please give me some hints?
Thanks,
Franz