Muhmood, A., A. Majeed, A. Niaz, S. S. H. Shah, and M. O. Shahid. “Evaluation of Anaerobic Digestate Potential As Organic Fertilizer in Improving Wheat Production and Soil Properties”. International Journal of Plant & Soil Science, Vol. 24, no. 1, Aug. 2018, pp. 1-10, doi:10.9734/IJPSS/2018/43255.