publisher of
- World Mineral Markets Stage II: An Econometric and Simulation Approach to World Markets for Copper, Aluminum, Nickel and Zinc. Ed. 14. 1981
- World Mineral Markets Stage III A User Oriented Simulation Model of the World Markets for Copper, Aluminum, Nickel and Zinc. Ed. 15. 1981
- An Empirical Approach to Markets for Non-renewable Resources. 25-46. 1985