Noorollahi, Younes, Yousefi, Hossein, Rezayan, Ali Hossein, Farabi Asl, Hadi. “Technical, Economical and Environmental Feasibility Study of  Urban Heating System Replaced with Geothermal Energy in IRAN.” Journal of Environmental Science and Technology, vol. 18, no. 4, 2016, pp. 73-88.