“Prediction of Methane Fraction in Biogas from Landfill Bioreactors by Neural Network Modeling”. International Journal of Health Studies (Undergoing change to Shahroud Journal of Medical Sciences) 1, no. 2 (September 22, 2015): Page: 9–13. Accessed November 23, 2024. https://ijhs.shmu.ac.ir/index.php/ijhs/article/view/49.