1. Chemical Metallurgy;Moore,1981
2. Recovery of zinc and methanol;Huwyler;Ger Offen,1976
3. Reduction of nonferrous metal oxides by natural gas;Chizhikov;Termodin Kinet Protsessov Vosstanov Metal, Mater Konf,1972
4. Reduction of copper, lead, and zinc oxides by methane;Chizhikov;Dokl Akad Nauk SSSR,1968