1. “Access Controls: A Basic Part of Your Growth Plan.” SECURITY DISTRIBUTING AND MARKETING, Vol. 11, No. 6 (June 1981), pp. 26-34.
2. “Controlling Physical Access from a Central Location.”;Austin;SECURITY MANAGEMENT,1981
3. “Before You Buy Computer-Based Access Control…”;Bajackson;SECURITY WORLD,1981
4. “Personnel Access Control – Criteria and testing.”;Bean;SECURITY MANAGEMENT,1978
5. “Designing an Effective Access Control System.”;Byers;SECURITY INDUSTRY AND PRODUCT NEWS,1980