Kristian Rotaru Carla Wilkin Leonid Churilov Dina Neiger Formalising Risk with Value-Focused Process Engineering. 1583-1595 2008 ECIS http://is2.lse.ac.uk/asp/aspecis/20080138.pdf conf/ecis/2008 db/conf/ecis/ecis2008.html#RotaruWCN08