1. NATO STANAG 4569, Protection Levels for Occupants of Logistic and Light Armoured Vehicles, May 24, 2004.
2. US ARMY TACOM ATPD-2352, Purchase Specification Transparent Armor, July 7, 2008.
3. U.S. Department of Defense MIL-PRF-46108C, Performance Specification Armor: Transparent, April 22, 2004.
4. U.S. Department of Defense MIL-STD-662F, "V50 Ballistic Test for Armor", December 18, 1997.
5. Depth of penetration testing;James,2002