1. Blake II, R.C., Shute, E.A., and White, K.J., 1989, in Biohydrometallurgy, Int. Symp. Proc, Jackson Hole, Wyoming, pp. 393.
2. Chen H., Fu C., and Zheng Di-ji, 1992, “Reduction leaching of manganese nodules by nickel matte in hydrochloric acid solution,” Hydrometallurgy, 28, pp. 269–275.
3. Chen, H., and Fu, C., 1995, “Kinetic of leaching manganese nodule in the presence of zinc sulphide,” Mineral Process Extract Metallurgical Review, 15, pp. 171–186.
4. Das, S.C., Sahoo, P.K., and Rao, P.K., 1982, “Extraction of manganese from low-grade ores by FeSO4 leaching,” Hydrometallurgy, 8, pp. 35–47.
5. Devi, N.B., Madhuchhanda, Mandira, Srinivasa Rao, K., Rath, P.C., and Paramguru, R.K., 1999, “Dissolution of metal values from deep-sea manganese nodule in HCl medium in presence of chalcopyrite,” Annual technical meeting, Indian Institute of metals, Paper PB-14, November 1999.