1. The recovery of gallium and indium from zinc refinery by-product;Abe;J. Min. Metall. Inst. Jpn.,1982
2. Production of indium by solvent extraction technique;Yamaguchi;J. Min. Metall. Inst. Jpn.,1980
3. Selective extraction of indium;Nippon Mining Co., Ltd.,1980
4. Back extraction of indium from organic solvent phases;Nippon Mining Co., Ltd.,1980
5. New technology for indium, germanium and gallium recovery in an electrolytic zinc plant;Run-cang,1984