1. E. Hornbogen and M. Roth:Z. Metallkd., 1967, vol. 58, pp. 842–55.
2. W. C. Bigelow, J. A. Amy, C. L. Corey, and J. W. Freeman:Symp. on Advances in Electron Metallography, ASTM, Philadelphia, PA, 1958, pp. 73–87.
3. W. T. Loomis, J. W. Freeman, and D. L. Sponseller:Metall. Trans., 1972, vol. 3, pp. 989–1000.
4. W. C. Hagel and H. J. Beattie:Precipitation Processes in Steels, Iron and Steel Institute, 1959, pp. 98–107.
5. H. J. Murphy, C. T. Sims, and G. R. Heckman:Trans. TMSAIME, 1967, vol. 239, pp. 1961–78.