Francesco Flammini Andrea Gaglione Nicola Mazzocca Concetta Pragliola Quantitative Security Risk Assessment and Management for Railway Transportation Infrastructures. 180-189 2008 CRITIS http://dx.doi.org/10.1007/978-3-642-03552-4_16 conf/critis/2008 db/conf/critis/critis2008.html#FlamminiGMP08