1. Copper metallurgy at the KGHM Polska Miedz S.A.-present state and perspectives;Czernecki,1999
2. Developments in direct-to-copper smelting at Olympic Dam;Hunt,1999
3. Direct smelting of blister copper—flash smelting tests of Olympic Dam concentrate;Asteljoki,1987
4. Problems with elimination of the main impurities in the KGHM Polska Miedz S.A. copper concentrates from the copper production cycle (shaft furnace process, direct blister smelting in a flash furnace);Czernecki,1998