1. B.H. Kear, L.E. Cross, J.E. Keem, R.W. Siegel, F. Spaepen, K.C. Taylor, E.L. Thomas, and K.-N. Tu, Research Opportunities for Materials with Ultrafine Microstructures, (National Academy, Washington, DC, 1989), Vol. NMAB–454.
2. R.P. Andres, R.S. Averback, W.L. Brown, L.E. Brus, W.A. Goddard, III, A. Kaldor, S.G. Louie, M. Moskovits, P.S. Peercy, S.J. Riley, R.W. Siegel, F. Spaepen, and Y. Wang, J. Mater. Res. 4, 704 (1989).
3. H. Gleiter, in: Deformation of Poly crystals: Mechanisms and Micro structures, edited by N. Hansen et al., (RisøNational Laboratory, Roskilde, 1981), p. 15.
4. R. Birringer, U. Herr, and H. Gleiter, Suppl. Trans. Jpn. Inst. Met. 27, 43 (1986).
5. R.W. Siegel and H. Hahn, in: Current Trends in the Physics of Materials, edited by M. Yussouff, (World Scientific Publ. Co., Singapore, 1987), p. 403.