00420nas a2200121   4500000000100000000000100001000000100002008004100003260007300044653001900117100001800136245014400154       2011                            d  c2011bInstitute of Information and Communication TechnologiesaSofia10aIT4Sec reports1 aTodor Tagarev00aArchitectural requirements in the integration of the Electronic Communications Network and the National Network of the State Administration