1. Cellular Solids: Structure and Properties;Gibson,1988
2. I. Jin, L.D. Kenny and H. Sang, US Patent No. 5,112,697, 1992.
3. Metallic foams: their production, properties and applications
4. P.W. Hardy and G.W. Peisker, US Patent No. 3,300,296, 1967.
5. J.W. Patten, US Patent No. 4,099,961, 1978.