1. Joint Aviation Requirements JAR 25 Large Aeroplanes JAR 25.1309, ACJ 1 to JAR 25.1309, AMJ 25.1309 para. 4
2. The MOD's Approach to Airworthiness,1993
3. Primary Flight Computers for the Boeing 777,1992
4. Software Considerations in Airborne Systems and Equipment Certification D0178B/ED12B RTCA/EUROCAE,1992
5. Military Standard Defense System Software Development DOD-STD-2167A