1. 3) H. NOWOTONY, F. BENESOVSKY, and E. RUDY : Mh. Chem., 91 (1960), s 348
2. 4) C. ZENER : quoted by C. S. SMITH, Trans. AIME, 175 (1948), p. 151
3. 5) G. J. BYRNE : "Recovery, Recrystallization and Grain Growth", (1965), p. 93, Macmillan Series in Material Science