1. Allen, H.G., Analysis and Design of Structural Sandwich Panels, Pergamon Press, London (1964).
2. Kuenzi, E.W., “Structural Sandwich Design Criteria,”Forest Products Laboratory, Madison, WI, Rep. No. 2161 (1963).
3. U. S. Forest Products Laboratory, Wood Handbook, Department of Agriculture, Agriculture Handbook No. 72 (1955).
4. Benjamin, B.S., “Expanded Polystyrene and Rigid Foam Polystyrene Foam Cores in Structural Sandwich Constructions,” Civil Engineering and Public Works Review (1965).
5. Ueng, C.E.S. andKim, T.D., “Shear Modulus of Core Materials with Arbitrary Polygonal Shape,”Comp. and Struct.,16 (1),21–25 (1983).