I have been working the last months on a paper for the magazine OBJEKTspektrum. And here it is: http://www.opitz-consulting.com/fileadmin/redaktion/veroeffentlichungen/pdf/objekt_spektrum_2010_6_maehr_sicher.pdf Bernhard Mähr @ OPITZ-CONSULTING published at http://thecattlecrew.wordpress.com/