1. Cellular Solids – Structure and Properties;Ashby,1997
2. G.R.FROUD, Your Sandwich order, Sir? s.l: Composites, IPC Business Press Limited, 1980, pp. 133–138.
3. Optimization of Stiffness in sandwich beams with Rigid Foam Cores;Gibson;Materials Science and Engineering,1984
4. F. Mujika, On the difference between flexural moduli obtained by three-point and four-point bending tests, Polytechnical University College, San Sebastián, Spain,pp 21 October 2005.
5. Onkar Murthy, N. Munirudrappa, (2006), L. Srikanth, R.M.V.G.K. Rao. “Strength and Stiffness Optimization Studies on Honeycomb Core Sandwich Panels”, Jl. Of Reinforced Plastics and Composites, vol. 25. No. 6, Page No-663.