1. D. J. McAdam, Jr. and G. W. Geil:Proc. Amer. Soc. Test Mat., 1970, vol. 41, p. 696.
2. V. V. Romanov:Metallurgiya Metallovedenie Fiziko Khimicheskie Metody Issledovaniya, 1963, vol. 13, p. 171.
3. D. Whitwham and U. R. Evans:J. Iron and Steel Inst., 1950, vol. 165, p. 72.
4. P. J. E. Forsyth:Acta Met., 1963, vol. 11, p.703.
5. D. Whitwham and U. R. Evans:J. Iron and Steel Inst., 1950, vol. 165, p. 76.