1. Copper electro-refining – state of art and perspectives;Stelter;Erzmetall,2001
2. Modelling the long-term perspects of the global copper material flow;Poganietz;Erzmetall,2003
3. Modelling investment in the world’s copper-sector;Dammert,1985
4. Mineral models;Labys,1985
5. Spatial and temporal allocation models of mineral and energy markets;Labys,1989