1. Atrophy in metal demand;Tilton;Earth and Mineral Sciences,1985
2. Tendenzwendel auf den Rohstoffmarkten;Hoffmeyer;Die Weltwirtschaft,1983
3. World Demand for Raw Materials in 1985 and 2000;Malenbaum,1977
4. Techniques for Consistent Forecasting of Future Demand for Major Minerals Using an Input-Output Framework;Leontief,1982
5. World Mineral Trends and US Supply Problems;Fischman,1980