1. Report CRTD;R.E. Hanneman,1999
2. W. Haupin and H. Kvande, Light Metals 2000, ed. R.D. Peterson (Warrendale, PA: TMS, 2000), p. 379.
3. C.W. Brown, Light Metals 2000, ed. R.D. Peterson (Warrendale, PA: TMS, 2000), p. 391.
4. T.R. Beck, Light Metals 1994, ed. U. Mannweiler (Warrendale, PA: TMS, 1994), p. 417.
5. T.R. Beck and R. Brooks, U.S. patent 5,006,209 (1991).