Sebastian Roschke Feng Cheng 0002 Robert Schuppenies Christoph Meinel Towards Unifying Vulnerability Information for Attack Graph Construction. 218-233 2009 ISC http://dx.doi.org/10.1007/978-3-642-04474-8_18 conf/isw/2009 db/conf/isw/isc2009.html#RoschkeCSM09