1. Nickel's Moa Bay puts Cuba among ranking Ni-producing nations;Anon Freeport;Eng. Min. J.,1959
2. Production of metals by gaseous reduction from solution process and chemistry;Evans,1968
3. Hydrometallurgical processes at high pressures;Forward;Trans. Inst. Min. Metall.,1957
4. Refining of crude nickel sulphate obtained from copper electrolyte;Havlik;Hydrometallurgy,1996