1. D. Kramer, U.S. Geological Survey Report No. 01-341 (Reston, VA: U.S. Geological Survey, 2001).
2. Uday B. Pal, David E. Woolley, and George B Kenney, “Emerging SOM Technology for the Green Synthesis of Metals from Oxides,” JOM, 53(10) (2001), p. 32.
3. A. Krishnan, X.G. Lu, and U.B. Pal, “Solid Oxide Membrane Process for Magnesium Production Directly from Magnesium Oxide,” Metallurgical and Materials Transactions B, 36B (2005), p. 463.
4. A. Krishnan, X.G. Lu, and U.B. Pal, “Solid Oxide Membrane (SOM) Technology for Cost-Effective and Environmentally Sound Production of Metals and Alloys from their Oxide Sources,” EPD Congress 2005, ed. M.E. Schlesinger (Warrendale, PA: TMS, 2005), p. 455.
5. A. Krishnan, X.G. Lu, and U.B. Pal, “Solid Oxide Membrane (SOM) for Cost Effective and Environmentally Sound Production of Magnesium Directly from Magnesium Oxide,” Magnesium Technology 2005 (Warrendale, PA: TMS, 2005), p. 7.