1. The disposal of arsenic from metallurgical processes: its status regarding ferric arsenate;Harris,1993
2. Oxidation of manganous ion by ozone in sulfate solutions;Nishimura;J. Min. Mater. Process. Inst. Jpn. (MMIJ),1991
3. Separation of cobalt and nickel by ozone oxidation;Nishimura;Hydrometallurgy,1992
4. Removal of arsenic(III), arsenic(V) with manganese from aqueous solution by ozonation;Nishimura,1994
5. Oxidation–precipitation with ozone in strongly acidified MnSO4 solutions with/without addition of other sulfate;Nishimura;J. Min. Mater. Process. Inst. Jpn. (MMIJ),1995