WASET
Pradhan, D. , Kim, D. , Ahn, J. , Lee, S. (2010). 'Microbial Leaching Process to Recover Valuable Metals from Spent Petroleum Catalyst Using Iron Oxidizing Bacteria'. World Academy of Science, Engineering and Technology, Open Science Index 38, International Journal of Chemical and Molecular Engineering, 4(2), 232 - 236.