WASET
Srichandan, H. , Pathak, A. , Kim, D. , Lee, S.. "Comparison of Bioleaching of Metals from Spent Petroleum Catalyst Using Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans". World Academy of Science, Engineering and Technology, Open Science Index 83, International Journal of Environmental and Ecological Engineering (2013), 7(11), 848 - 852.