1. Davies, G. J., Shu, Z., Review-metallic foams: their production, properties and applications,J. Mater. Sci., 1983, 18: 1899.
2. Babjak, J., Ettle, V. A., Paserin, V., Nickel foam,EP 0 402 738 A2, 1990.
3. Brannan, J. R., Andrew, S. B., Anthony, J., Continuous electroplating of conductive foams,US 5098544, 1992.
4. Masaaki, H., Tetsuya, N., Shono, I. et al., The method for continuous manufacture of porous metals,JP 2795A, 1992 (in Japanese).
5. Higashiichi, T., Kazuhito, K., Tetsuya, K., Porous metals with three-dimensional reticulated structure and the method producing them,JP 248492A, 1994 (in Japanese).