8Ann - Sofie L E. Forsberg. Blast valves - unnecessary expense or vital components in structure hardening[A]. Proceeding of the 9th symposium on the interaction of non - nuclear munitions with structures[C]. Mclean Virginia,1999:238 -245.
9Hader H J. Design and application of reinforced concrete-armoured doors[A]. Proceeding of the 2th symposium on the interaction of non-nuclear munitions with structures[C]. Panama City Beach ,FL. , 1985:494 -499.