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2. J. R. Handley, Platinum Metals Rev., 30, No. 1, 12/13 (1986).
3. L. B. Hunt, ibid., 31, No. 1, 32–41 (1987).
4. N. A. Saltykova and B. E. Baraboshkin, Proc. 6th Intern. Conf. “Manufacturing and maintenance of products made with noble metal alloys,” Ekaterinburg (1996), p. 20.
5. N. A. Saltykova, Proc. 16th Internat. Chernyaev Symp. on Chemistry, Analysis, and Technology of Platinum Group Metals, Ekaterinburg (1996), p. 274.