1. K. Mager et al., “Recovery of Zinc Oxide from Secondary Raw Materials: New Developments of the Waelz Process,” Fourth International Symposium on Recycling of Metals and Engineered Materials, ed. D.L. Stewart, R.L. Stephens, and J.C. Daley (Warrendale, PA: TMS, 2000), pp. 329–344.
2. K. Mager, “Alkali Halide Leaching of Waelz Oxide,” Fortschritte der Hydrometallurgie, Number 82 (1998), pp. 69–78.
3. H. Vogg and L. Stieglitz, “Thermal Behavior of PCDD/PCDF in Fly Ash from Municipal Incinerators,” Chemosphere, 15 (9-2) (1986), pp. 1373–1378.
4. L. Stieglitz et al., “On Formation Conditions of Organohalogen Compounds from Particulate Carbon of Fly Ash,” Chemosphere, 25 (8–10) (1991), pp. 1255–1264.
5. L. Stieglitz and H. Vogg, “On Formation Conditions of PCDD/PCDF in Fly Ash from Municipal Waste Incinerators,” Chemosphere, 16 (8/9) (1987), pp. 1917–1922.