Hi Dennis, I think you are asking the wrong people. This forum is based in the UK. However, I am not sure what you exspect to find in Munich as there are only two universities (as far as I am aware). The LMU and the TUM. The latter only offers "informatics of economics" (however you might want to translate this). There are hardly any taught PhD positions in Germany but I found some courses which might be of interest but nothing in Munich:
http://www.bgse.uni-bonn.de/index.php?id=449
http://www.elitenetzwerk-bayern.de/en/idk_incentives.html
http://www.daad.de/deutschland/studienangebote/promotion/06546.en.html
Hope this helps