1. C. Wagner:Z. physik. Chem., 1933, vol. 21B, pp. 25–41.
2. N. B. Pilling and R. E. Bedworth:J. Inst. Metals, 1923, vol. 29, pp. 529–82.
3. P. D. Dankov and P. V. Churaev:Doklady Akad. Nauk. SSSR, 1950, vol. 73, pp. 1221–24.
4. U. R. Evans:Symp. on Internal Stresses in Metals and Alloys, pp. 291–310, London, 1947.
5. W. J. Moore:J. Chem. Phys., 1953, vol. 21, p. 1117.