1. J. Landis Martin “World Titanium Market Outlook,” 15th Annual International Titanium Conference, October 12-15, 1999, Las Colinas, TX (1999)
2. Titanium Dioxide;Pigment Handbook,1988
3. Direct Reduction Processes for the Production of Titanium Metal National Materials Advisory Board (NRC), NMAB-304 (1974), 80
4. Weekly Prices;Platt's Metals Week;Platt's Metals Week,1999