1. W. D. Coolidge “Ductile Tungsten”, Proc. AIEE 1910, p. 961.
2. R. Irmann, “Sintered Aluminum with High Strength at Elevated Temperatures”, Metallurgia 49, 1952, p. 125.
3. C.J. Leadbeater and discussion by E. Gregory, “Some Developments in Sintered Structural Parts”, Symposium on Powder Metallurgy, 1954, ISI Special Report No. 58, pp. 149–159 and p. 357.
4. G. B. Alexander, U.S. Patent No. 2,972,529, February 21, 1961.
5. J. S. Benjamin, “Dispersion Strengthened Superalloys by Mechanical Alloying”, submitted for publication in Metallurgical Transactions.