6Selvi S C, Modak J M, Natarajan K A. Electrolioleaching of Sphalerite Flotation Concertrate. Miner Eng, 1998,8.
7Natarajan K A. Bioleaching of Sulphides under Applied Potentials.Hydrometallurgy, 1992,29.
8Gomez C, Blazquez M L, Ballester A. Influence of Warious Factors in the Bioleaching of a Bulk Concentrate with Mesophiloc Microorganism in the Pressence of Ag+. Hydrometallurgy, 1997,2.