References

1. I.G. Polotzki, T.Y. Benieva, and Z.L. Khodor, Effect of Supersonic Vibrations on the Crystallization Processes, Akad. Nauk, Vol 6, 1953

2. A.E. Bibb and S.M. Bishop, "Grain Refinement of Cast Beryllium," KAPL-1917, General Electric Co., 1950

3. S.H. Gelles and R.K. Malik, "Process Development for Producing Fine-Grain Casting in Space," Report CR-120739, National Aeronautics and Space Administration, April 1975

James M. Marder, Brush Wellman

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