1. L. P. Skugorova andA. I. Nechaev,Metalloved. Termich. Obrabotka Metallov 11 (1973) 61.
2. T. Katagiri andN. Takamoto,Nippon Kinzoku Gakkai-shi 32 (1968) 1245.
3. Idem, ibid 32 (1968) 1025.
4. Yu. A. Alimov andS. I. Gordienko,Metalloved. Termich. Obrabotka Metallov 12 (1975) 61.
5. V. G. Permyakov, V. F. Loskutov, I. Kh. Trush andV. N. Pisarenko,ibid 2 (1978) 56.