Nikbakht, M., H. Saadati, and E. Fataei. “Feasibility Study of Different Methods of Energy Extraction from Ardabil Urban Waste”. Journal of Research in Biology, Vol. 8, no. 3, Apr. 2018, pp. 2451-64, https://ojs.jresearchbiology.com/ojs1/index.php/jrb/article/view/466.