1. AC20-107B, Composite Aircraft Structures,1984
2. Care and Repair of Advanced Composite;Armstron,2005
3. ASTM D7136, Standard test method for measuring the damage resistance of a fiber-reinforced polymer matrix composite to a drop-weight impact event, 2005.
4. ASTM D7137, Standard test method for compressive residual strength properties of damaged polymer matrix composite plates, 2005.
5. Low-velocity impact damage initiation in graphite/epoxy/Nomex honeycomb-sandwich plates;Herup;Composites Science and Technology,1998