00385nas a2200121   4500000000100000000000100001000000100002008004100003260007300044653001900117100001800136245010900154       2010                            d  c2010bInstitute of Information and Communication TechnologiesaSofia10aIT4Sec reports1 aTodor Tagarev00aRequirements and constraints in the design and selection of critical infrastructure protection scenarios