1. 1. RH Eric, and AA Hejja . Dimensioning, scale-up and operating considerations for six electrode electric furnaces, part II: design and scale-up considerations for furnaces treating PGM-containing copper nickel concentrates . Las Vegas USA, 1995 . page range239 -257 .
2. 2. AA Hejja, RH Eric, and DD Howat . Electrical Conductivity, viscosity and liquidus temperature of slags in electric smelting of copper-nickel concentrates . In: San Francisco, 1994 : 621 -640 .
3. 3. RH Eric, AA Hejja, and DD Howat . Metal losses to the Slag and matte separation in electric smelting of copper-nickel concentrates . In: San Francisco USA, 1994 : 641 -656 .
4. 4. RH Eric, and AA Hejja . Dimensioning, scale-up and operating considerations for six electrode electric furnaces, part I: current and heat flow in the slag . In: Las Vagus, 1995 : 223 -238 .