1. Microbial leaching of nickel from low grade Greek laterites;Alibhai,1991
2. Bioleaching and bioprecipitation of nickel and iron from laterites;Alibhai;FEMS Microbiology Reviews,1993
3. Effect of organic acids on ferric iron removal from iron-stained kaolinite;Ambikadevi;Applied Clay Science,2000
4. Aspects of leaching and kinetics of some Egyptian iron ore;Amer;Erzmetall,2001
5. Austin, J.W., Bradburn, R.G., Cromwell, C.A., Gratch, E., Groiss, E., Perkins, D., Walker, R.A., 1985, Process for purifying molybdenite concentrates, US Patent 4,500,496.