Siddiqui, Samina, Shehla Sattar, Asghari Bano, and Asim Shahzad. 2016. “Quantifying the Effect of Microbial Consortium and Alfalfa to Accelerate the Degradation of Oily Sludge”. Journal of Himalayan Earth Sciences 49 (1):117-23. http://ojs.uop.edu.pk/jhes/article/view/1935.