Alberto Pasquini Simone Pozzi Luca Save The Wrong Question to the Right People. A Critical View of Severity Classification Methods in ATM Experimental Projects. 387-400 2008 SAFECOMP http://dx.doi.org/10.1007/978-3-540-87698-4_32 conf/safecomp/2008 db/conf/safecomp/safecomp2008.html#PasquiniPS08