1. F. V. Lenel:Powder Metallurgy Principles and Applications, Metal Powder Industries Federation, Princeton, NJ, 1980, pp. 284–95.
2. E. Ariel, J. Barta, and D. Brandon:Powder Met. Inter., 1973, vol. 5, pp. 125–29.
3. J.F. Kuzmick:Modern Developments in Powder Metallurgy, H.H. Hausner, ed., Plenum Press, New York, NY, 1966, vol. 3, pp. 166–72.
4. D. J. Jones and P. Munnery:Powder Met., 1967, vol. 10, pp. 156–73.
5. W. G. Northcutt, Jr.: “Fabrication Development of Tungsten Alloy Penetrators”, Report Y-1994, Oak Ridge Y-12 Plant, Oak Ridge, TN, August 1975.