WASET
Yerushalmi, L. , Haghighat, F. , Shahabadi, M.. "Contribution of On-Site and Off-Site Processes to Greenhouse Gas (GHG) Emissions by Wastewater Treatment Plants". World Academy of Science, Engineering and Technology, Open Science Index 30, International Journal of Environmental and Ecological Engineering, (2009), 3(6), 144 - 148.