1. Metallic foams: their production, properties and applications
2. Principles of Powder Metallurgy;Huang,1997
3. M. Honda, T. Nishi, S. Ishii, S. Furukawa, JP Heisei 4-2795 A (1992) (in Japanese).
4. J.R. Brannan, S.B. Andrew, J. Anthony, US Patent 5098544 (1992).
5. H. Takajo, K. Kushihashi, T. Kazuta, JP Heisei 6-248492 A (1994) (in Japanese).