Security Clearance Faq
Διεθνής Πρακτική Εκτάκτων Αναγκών_ International trends in emergency management
ICC Policy on Personnel Security Clearances
HMG Personnel Security Controls V1 1 Apr-2013
Tempest Electromagnetic Emanations Security Government Standard 4287
1843 Greek National Assembly - Πρακτικά Εθνοσυνέλευσης 1843