1) N. H. Polakowski : Softening of Metals during Cold Working, J. Iron & Steel Inst., 169 (1951-12) 337.
2) 飯田喜介, 青木 勇 : 鋼の加工軟化, 精密機械, 39, 4 (1973) 441.
3) N. P. Goss : The Effect of Microstructure upon the Work Hardening Characteristics of a 0.74 per cent Carbon Strip Steel, Trans. Amer. Soc. Mets., 30 (1942) 936.